diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 7cff858..5c3dd81 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -19,7 +19,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                ubuntu_version: [22.04]
+                ubuntu_version: [22.04,24.10,25.04]
                 shared: [ON, OFF]
 
         steps:
@@ -59,4 +59,4 @@ jobs:
           run: cmake -DCMAKE_BUILD_TYPE="${{env.BUILD_TYPE}}" -DBUILD_SHARED_LIBS=${{ matrix.shared }} -B "${{github.workspace}}/build"
 
         - name: Build
-          run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
\ No newline at end of file
+          run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
diff --git a/include/dnet/icmp.h b/include/dnet/icmp.h
index f1433a3..7f120f6 100644
--- a/include/dnet/icmp.h
+++ b/include/dnet/icmp.h
@@ -153,8 +153,8 @@ struct icmp_msg_rtradvert {
  * Timestamp message data
  */
 struct icmp_msg_tstamp {
-	uint32_t	icmp_id;		/* identifier */
-	uint32_t	icmp_seq;		/* sequence number */
+	uint16_t	icmp_id;		/* identifier */
+	uint16_t	icmp_seq;		/* sequence number */
 	uint32_t	icmp_ts_orig;		/* originate timestamp */
 	uint32_t	icmp_ts_rx;		/* receive timestamp */
 	uint32_t	icmp_ts_tx;		/* transmit timestamp */
@@ -164,8 +164,8 @@ struct icmp_msg_tstamp {
  * Address mask message data, RFC 950
  */
 struct icmp_msg_mask {
-	uint32_t	icmp_id;		/* identifier */
-	uint32_t	icmp_seq;		/* sequence number */
+	uint16_t	icmp_id;		/* identifier */
+	uint16_t	icmp_seq;		/* sequence number */
 	uint32_t	icmp_mask;		/* address mask */
 };
 
diff --git a/python/dnet.c b/python/dnet.c
index 1b459f3..fd4cf17 100644
--- a/python/dnet.c
+++ b/python/dnet.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 3.0.8 */
+/* Generated by Cython 3.0.12 */
 
 /* BEGIN: Cython Metadata
 {
@@ -9,18 +9,20 @@
         "extra_objects": [
             "../src/.libs/addr-util.o",
             "../src/.libs/addr.o",
-            "../src/.libs/arp-bsd.o",
+            "../src/.libs/arp-ioctl.o",
             "../src/.libs/blob.o",
-            "../src/.libs/eth-none.o",
+            "../src/.libs/eth-linux.o",
             "../src/.libs/fw-none.o",
             "../src/.libs/intf.o",
             "../src/.libs/ip-util.o",
             "../src/.libs/ip.o",
             "../src/.libs/ip6.o",
-            "../src/.libs/ndisc-none.o",
+            "../src/.libs/ndisc-linux.o",
             "../src/.libs/rand.o",
-            "../src/.libs/route-bsd.o",
-            "../src/.libs/tun-none.o"
+            "../src/.libs/route-linux.o",
+            "../src/.libs/strlcat.o",
+            "../src/.libs/strlcpy.o",
+            "../src/.libs/tun-linux.o"
         ],
         "include_dirs": [
             "../include"
@@ -58,10 +60,10 @@ END: Cython Metadata */
 #else
 #define __PYX_EXTRA_ABI_MODULE_NAME ""
 #endif
-#define CYTHON_ABI "3_0_8" __PYX_EXTRA_ABI_MODULE_NAME
+#define CYTHON_ABI "3_0_12" __PYX_EXTRA_ABI_MODULE_NAME
 #define __PYX_ABI_MODULE_NAME "_cython_" CYTHON_ABI
 #define __PYX_TYPE_MODULE_PREFIX __PYX_ABI_MODULE_NAME "."
-#define CYTHON_HEX_VERSION 0x030008F0
+#define CYTHON_HEX_VERSION 0x03000CF0
 #define CYTHON_FUTURE_DIVISION 1
 #include <stddef.h>
 #ifndef offsetof
@@ -153,6 +155,8 @@ END: Cython Metadata */
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
     #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
+  #undef CYTHON_USE_FREELISTS
+  #define CYTHON_USE_FREELISTS 0
 #elif defined(PYPY_VERSION)
   #define CYTHON_COMPILING_IN_PYPY 1
   #define CYTHON_COMPILING_IN_CPYTHON 0
@@ -214,6 +218,8 @@ END: Cython Metadata */
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
     #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
+  #undef CYTHON_USE_FREELISTS
+  #define CYTHON_USE_FREELISTS 0
 #elif defined(CYTHON_LIMITED_API)
   #ifdef Py_LIMITED_API
     #undef __PYX_LIMITED_VERSION_HEX
@@ -275,6 +281,8 @@ END: Cython Metadata */
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
     #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
+  #undef CYTHON_USE_FREELISTS
+  #define CYTHON_USE_FREELISTS 0
 #elif defined(Py_GIL_DISABLED) || defined(Py_NOGIL)
   #define CYTHON_COMPILING_IN_PYPY 0
   #define CYTHON_COMPILING_IN_CPYTHON 0
@@ -284,11 +292,17 @@ END: Cython Metadata */
   #ifndef CYTHON_USE_TYPE_SLOTS
     #define CYTHON_USE_TYPE_SLOTS 1
   #endif
+  #ifndef CYTHON_USE_TYPE_SPECS
+    #define CYTHON_USE_TYPE_SPECS 0
+  #endif
   #undef CYTHON_USE_PYTYPE_LOOKUP
   #define CYTHON_USE_PYTYPE_LOOKUP 0
   #ifndef CYTHON_USE_ASYNC_SLOTS
     #define CYTHON_USE_ASYNC_SLOTS 1
   #endif
+  #ifndef CYTHON_USE_PYLONG_INTERNALS
+    #define CYTHON_USE_PYLONG_INTERNALS 0
+  #endif
   #undef CYTHON_USE_PYLIST_INTERNALS
   #define CYTHON_USE_PYLIST_INTERNALS 0
   #ifndef CYTHON_USE_UNICODE_INTERNALS
@@ -296,8 +310,6 @@ END: Cython Metadata */
   #endif
   #undef CYTHON_USE_UNICODE_WRITER
   #define CYTHON_USE_UNICODE_WRITER 0
-  #undef CYTHON_USE_PYLONG_INTERNALS
-  #define CYTHON_USE_PYLONG_INTERNALS 0
   #ifndef CYTHON_AVOID_BORROWED_REFS
     #define CYTHON_AVOID_BORROWED_REFS 0
   #endif
@@ -309,11 +321,22 @@ END: Cython Metadata */
   #endif
   #undef CYTHON_FAST_THREAD_STATE
   #define CYTHON_FAST_THREAD_STATE 0
+  #undef CYTHON_FAST_GIL
+  #define CYTHON_FAST_GIL 0
+  #ifndef CYTHON_METH_FASTCALL
+    #define CYTHON_METH_FASTCALL 1
+  #endif
   #undef CYTHON_FAST_PYCALL
   #define CYTHON_FAST_PYCALL 0
+  #ifndef CYTHON_PEP487_INIT_SUBCLASS
+    #define CYTHON_PEP487_INIT_SUBCLASS 1
+  #endif
   #ifndef CYTHON_PEP489_MULTI_PHASE_INIT
     #define CYTHON_PEP489_MULTI_PHASE_INIT 1
   #endif
+  #ifndef CYTHON_USE_MODULE_STATE
+    #define CYTHON_USE_MODULE_STATE 0
+  #endif
   #ifndef CYTHON_USE_TP_FINALIZE
     #define CYTHON_USE_TP_FINALIZE 1
   #endif
@@ -321,6 +344,12 @@ END: Cython Metadata */
   #define CYTHON_USE_DICT_VERSIONS 0
   #undef CYTHON_USE_EXC_INFO_STACK
   #define CYTHON_USE_EXC_INFO_STACK 0
+  #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
+    #define CYTHON_UPDATE_DESCRIPTOR_DOC 1
+  #endif
+  #ifndef CYTHON_USE_FREELISTS
+    #define CYTHON_USE_FREELISTS 0
+  #endif
 #else
   #define CYTHON_COMPILING_IN_PYPY 0
   #define CYTHON_COMPILING_IN_CPYTHON 1
@@ -411,6 +440,9 @@ END: Cython Metadata */
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
     #define CYTHON_UPDATE_DESCRIPTOR_DOC 1
   #endif
+  #ifndef CYTHON_USE_FREELISTS
+    #define CYTHON_USE_FREELISTS 1
+  #endif
 #endif
 #if !defined(CYTHON_FAST_PYCCALL)
 #define CYTHON_FAST_PYCCALL  (CYTHON_FAST_PYCALL && PY_VERSION_HEX >= 0x030600B1)
@@ -754,8 +786,13 @@ END: Cython Metadata */
   typedef PyObject *(*__Pyx_PyCFunctionFastWithKeywords) (PyObject *self, PyObject *const *args,
                                                           Py_ssize_t nargs, PyObject *kwnames);
 #else
-  #define __Pyx_PyCFunctionFast _PyCFunctionFast
-  #define __Pyx_PyCFunctionFastWithKeywords _PyCFunctionFastWithKeywords
+  #if PY_VERSION_HEX >= 0x030d00A4
+  #  define __Pyx_PyCFunctionFast PyCFunctionFast
+  #  define __Pyx_PyCFunctionFastWithKeywords PyCFunctionFastWithKeywords
+  #else
+  #  define __Pyx_PyCFunctionFast _PyCFunctionFast
+  #  define __Pyx_PyCFunctionFastWithKeywords _PyCFunctionFastWithKeywords
+  #endif
 #endif
 #if CYTHON_METH_FASTCALL
   #define __Pyx_METH_FASTCALL METH_FASTCALL
@@ -1107,7 +1144,7 @@ static CYTHON_INLINE PyObject * __Pyx_PyDict_GetItemStrWithError(PyObject *dict,
   #define __Pyx_PyBytes_GET_SIZE(o) PyBytes_Size(o)
   #define __Pyx_PyByteArray_GET_SIZE(o) PyByteArray_Size(o)
 #endif
-#if PY_VERSION_HEX >= 0x030d00A1
+#if __PYX_LIMITED_VERSION_HEX >= 0x030d00A1
   #define __Pyx_PyImport_AddModuleRef(name) PyImport_AddModuleRef(name)
 #else
   static CYTHON_INLINE PyObject *__Pyx_PyImport_AddModuleRef(const char *name) {
@@ -1194,7 +1231,7 @@ static CYTHON_INLINE float __PYX_NAN() {
 #endif
 
 #define __PYX_MARK_ERR_POS(f_index, lineno) \
-    { __pyx_filename = __pyx_f[f_index]; (void)__pyx_filename; __pyx_lineno = lineno; (void)__pyx_lineno; __pyx_clineno = __LINE__; (void)__pyx_clineno; }
+    { __pyx_filename = __pyx_f[f_index]; (void)__pyx_filename; __pyx_lineno = lineno; (void)__pyx_lineno; __pyx_clineno = __LINE__;  (void)__pyx_clineno; }
 #define __PYX_ERR(f_index, lineno, Ln_error) \
     { __PYX_MARK_ERR_POS(f_index, lineno) goto Ln_error; }
 
@@ -1299,24 +1336,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char*);
 #define __Pyx_PyByteArray_FromCString(s)   __Pyx_PyByteArray_FromString((const char*)s)
 #define __Pyx_PyStr_FromCString(s)     __Pyx_PyStr_FromString((const char*)s)
 #define __Pyx_PyUnicode_FromCString(s) __Pyx_PyUnicode_FromString((const char*)s)
-#if CYTHON_COMPILING_IN_LIMITED_API
-static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const wchar_t *u)
-{
-    const wchar_t *u_end = u;
-    while (*u_end++) ;
-    return (size_t)(u_end - u - 1);
-}
-#else
-static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE *u)
-{
-    const Py_UNICODE *u_end = u;
-    while (*u_end++) ;
-    return (size_t)(u_end - u - 1);
-}
-#endif
 #define __Pyx_PyUnicode_FromOrdinal(o)       PyUnicode_FromOrdinal((int)o)
-#define __Pyx_PyUnicode_FromUnicode(u)       PyUnicode_FromUnicode(u, __Pyx_Py_UNICODE_strlen(u))
-#define __Pyx_PyUnicode_FromUnicodeAndLength PyUnicode_FromUnicode
 #define __Pyx_PyUnicode_AsUnicode            PyUnicode_AsUnicode
 #define __Pyx_NewRef(obj) (Py_INCREF(obj), obj)
 #define __Pyx_Owned_Py_None(b) __Pyx_NewRef(Py_None)
@@ -2007,7 +2027,7 @@ static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args,
 #if !CYTHON_VECTORCALL
 #if PY_VERSION_HEX >= 0x03080000
   #include "frameobject.h"
-#if PY_VERSION_HEX >= 0x030b00a6 && !CYTHON_COMPILING_IN_LIMITED_API
+#if PY_VERSION_HEX >= 0x030b00a6 && !CYTHON_COMPILING_IN_LIMITED_API && !defined(PYPY_VERSION)
   #ifndef Py_BUILD_CORE
     #define Py_BUILD_CORE 1
   #endif
@@ -2193,11 +2213,7 @@ static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name);
 static CYTHON_INLINE PyObject *__Pyx_GetAttr(PyObject *, PyObject *);
 
 /* HasAttr.proto */
-#if __PYX_LIMITED_VERSION_HEX >= 0x030d00A1
-#define __Pyx_HasAttr(o, n)  PyObject_HasAttrWithError(o, n)
-#else
 static CYTHON_INLINE int __Pyx_HasAttr(PyObject *, PyObject *);
-#endif
 
 /* IncludeStructmemberH.proto */
 #include <structmember.h>
@@ -11872,7 +11888,7 @@ static PyObject *__pyx_pf_4dnet_4addr_6__add__(struct __pyx_obj_4dnet_addr *__py
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
-  int __pyx_t_5;
+  unsigned int __pyx_t_5;
   unsigned long __pyx_t_6;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
@@ -13127,7 +13143,7 @@ static PyObject *__pyx_pf_4dnet_4addr_28__long__(struct __pyx_obj_4dnet_addr *__
   PyObject *__pyx_t_1 = NULL;
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
-  int __pyx_t_4;
+  unsigned int __pyx_t_4;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -14406,9 +14422,10 @@ static int __pyx_f_4dnet___arp_callback(struct arp_entry *__pyx_v_entry, void *_
   PyObject *__pyx_t_4 = NULL;
   PyObject *(*__pyx_t_5)(PyObject *);
   struct addr __pyx_t_6;
-  int __pyx_t_7;
+  unsigned int __pyx_t_7;
   int __pyx_t_8;
   int __pyx_t_9;
+  int __pyx_t_10;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -14589,8 +14606,8 @@ static int __pyx_f_4dnet___arp_callback(struct arp_entry *__pyx_v_entry, void *_
  * 
  * cdef class arp:
  */
-  __pyx_t_7 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_7 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 698, __pyx_L1_error)
-  __pyx_r = __pyx_t_7;
+  __pyx_t_10 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_10 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 698, __pyx_L1_error)
+  __pyx_r = __pyx_t_10;
   goto __pyx_L0;
 
   /* "dnet.pyx":690
@@ -15532,7 +15549,7 @@ static PyObject *__pyx_pf_4dnet_3arp_10__iter__(struct __pyx_obj_4dnet_arp *__py
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
-  int __pyx_t_5;
+  unsigned int __pyx_t_5;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -17559,9 +17576,10 @@ static int __pyx_f_4dnet___intf_callback(struct intf_entry *__pyx_v_entry, void
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
   PyObject *(*__pyx_t_5)(PyObject *);
-  int __pyx_t_6;
+  unsigned int __pyx_t_6;
   int __pyx_t_7;
   int __pyx_t_8;
+  int __pyx_t_9;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -17700,8 +17718,8 @@ static int __pyx_f_4dnet___intf_callback(struct intf_entry *__pyx_v_entry, void
  * 
  * cdef class intf:
  */
-  __pyx_t_6 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 978, __pyx_L1_error)
-  __pyx_r = __pyx_t_6;
+  __pyx_t_9 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 978, __pyx_L1_error)
+  __pyx_r = __pyx_t_9;
   goto __pyx_L0;
 
   /* "dnet.pyx":973
@@ -18874,7 +18892,7 @@ static PyObject *__pyx_pf_4dnet_4intf_12__iter__(struct __pyx_obj_4dnet_intf *__
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
-  int __pyx_t_5;
+  unsigned int __pyx_t_5;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -19264,9 +19282,10 @@ static int __pyx_f_4dnet___route_callback(struct route_entry *__pyx_v_entry, voi
   PyObject *__pyx_t_4 = NULL;
   PyObject *(*__pyx_t_5)(PyObject *);
   struct addr __pyx_t_6;
-  int __pyx_t_7;
+  unsigned int __pyx_t_7;
   int __pyx_t_8;
   int __pyx_t_9;
+  int __pyx_t_10;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -19447,8 +19466,8 @@ static int __pyx_f_4dnet___route_callback(struct route_entry *__pyx_v_entry, voi
  * 
  * cdef class route:
  */
-  __pyx_t_7 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_7 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 1097, __pyx_L1_error)
-  __pyx_r = __pyx_t_7;
+  __pyx_t_10 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_10 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 1097, __pyx_L1_error)
+  __pyx_r = __pyx_t_10;
   goto __pyx_L0;
 
   /* "dnet.pyx":1089
@@ -20390,7 +20409,7 @@ static PyObject *__pyx_pf_4dnet_5route_10__iter__(struct __pyx_obj_4dnet_route *
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
-  int __pyx_t_5;
+  unsigned int __pyx_t_5;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -21452,9 +21471,10 @@ static int __pyx_f_4dnet___fw_callback(struct fw_rule *__pyx_v_rule, void *__pyx
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
   PyObject *(*__pyx_t_5)(PyObject *);
-  int __pyx_t_6;
+  unsigned int __pyx_t_6;
   int __pyx_t_7;
   int __pyx_t_8;
+  int __pyx_t_9;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -21593,8 +21613,8 @@ static int __pyx_f_4dnet___fw_callback(struct fw_rule *__pyx_v_rule, void *__pyx
  * 
  * cdef class fw:
  */
-  __pyx_t_6 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 1243, __pyx_L1_error)
-  __pyx_r = __pyx_t_6;
+  __pyx_t_9 = __Pyx_PyInt_As_int(__pyx_v_ret); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 1243, __pyx_L1_error)
+  __pyx_r = __pyx_t_9;
   goto __pyx_L0;
 
   /* "dnet.pyx":1238
@@ -22316,7 +22336,7 @@ static PyObject *__pyx_pf_4dnet_2fw_8__iter__(struct __pyx_obj_4dnet_fw *__pyx_v
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
-  int __pyx_t_5;
+  unsigned int __pyx_t_5;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -26323,7 +26343,7 @@ static PyObject *__pyx_pf_4dnet_36__pyx_unpickle___addr_ip4_iter(CYTHON_UNUSED P
   int __pyx_t_2;
   PyObject *__pyx_t_3 = NULL;
   PyObject *__pyx_t_4 = NULL;
-  int __pyx_t_5;
+  unsigned int __pyx_t_5;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -26505,7 +26525,7 @@ static PyObject *__pyx_f_4dnet___pyx_unpickle___addr_ip4_iter__set_state(struct
   PyObject *__pyx_t_5 = NULL;
   PyObject *__pyx_t_6 = NULL;
   PyObject *__pyx_t_7 = NULL;
-  int __pyx_t_8;
+  unsigned int __pyx_t_8;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -26766,6 +26786,9 @@ static PyTypeObject __pyx_type_4dnet_eth = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -26914,6 +26937,9 @@ static PyTypeObject __pyx_type_4dnet_ip = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -27292,6 +27318,9 @@ static PyTypeObject __pyx_type_4dnet_addr = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -27438,6 +27467,9 @@ static PyTypeObject __pyx_type_4dnet___addr_ip4_iter = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -27590,6 +27622,9 @@ static PyTypeObject __pyx_type_4dnet_arp = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -27743,6 +27778,9 @@ static PyTypeObject __pyx_type_4dnet_intf = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -27895,6 +27933,9 @@ static PyTypeObject __pyx_type_4dnet_route = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -28046,6 +28087,9 @@ static PyTypeObject __pyx_type_4dnet_fw = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -28200,6 +28244,9 @@ static PyTypeObject __pyx_type_4dnet_rand = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -28368,6 +28415,9 @@ static PyTypeObject __pyx_type_4dnet___rand_xrange = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -28534,6 +28584,9 @@ static PyTypeObject __pyx_type_4dnet_tun = {
   #if PY_VERSION_HEX >= 0x030C0000
   0, /*tp_watched*/
   #endif
+  #if PY_VERSION_HEX >= 0x030d00A4
+  0, /*tp_versions_used*/
+  #endif
   #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
@@ -34832,7 +34885,6 @@ static CYTHON_INLINE PyObject *__Pyx_GetAttr(PyObject *o, PyObject *n) {
 }
 
 /* HasAttr */
-#if __PYX_LIMITED_VERSION_HEX < 0x030d00A1
 static CYTHON_INLINE int __Pyx_HasAttr(PyObject *o, PyObject *n) {
     PyObject *r;
     if (unlikely(!__Pyx_PyBaseString_Check(n))) {
@@ -34849,7 +34901,6 @@ static CYTHON_INLINE int __Pyx_HasAttr(PyObject *o, PyObject *n) {
         return 1;
     }
 }
-#endif
 
 /* FixUpExtensionType */
 #if CYTHON_USE_TYPE_SPECS
@@ -36256,7 +36307,7 @@ static PyObject * __Pyx_CyFunction_Vectorcall_FASTCALL_KEYWORDS(PyObject *func,
     default:
         return NULL;
     }
-    return ((_PyCFunctionFastWithKeywords)(void(*)(void))def->ml_meth)(self, args, nargs, kwnames);
+    return ((__Pyx_PyCFunctionFastWithKeywords)(void(*)(void))def->ml_meth)(self, args, nargs, kwnames);
 }
 static PyObject * __Pyx_CyFunction_Vectorcall_FASTCALL_KEYWORDS_METHOD(PyObject *func, PyObject *const *args, size_t nargsf, PyObject *kwnames)
 {
@@ -36391,6 +36442,9 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030C0000
     0,
 #endif
+#if PY_VERSION_HEX >= 0x030d00A4
+    0,
+#endif
 #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
@@ -36576,7 +36630,7 @@ static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) {
 #include "compile.h"
 #include "frameobject.h"
 #include "traceback.h"
-#if PY_VERSION_HEX >= 0x030b00a6 && !CYTHON_COMPILING_IN_LIMITED_API
+#if PY_VERSION_HEX >= 0x030b00a6 && !CYTHON_COMPILING_IN_LIMITED_API && !defined(PYPY_VERSION)
   #ifndef Py_BUILD_CORE
     #define Py_BUILD_CORE 1
   #endif
@@ -36817,12 +36871,19 @@ static CYTHON_INLINE PyObject* __Pyx_PyInt_From_unsigned_long(unsigned long valu
         }
     }
     {
-        int one = 1; int little = (int)*(unsigned char *)&one;
         unsigned char *bytes = (unsigned char *)&value;
-#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX >= 0x030d00A4
+        if (is_unsigned) {
+            return PyLong_FromUnsignedNativeBytes(bytes, sizeof(value), -1);
+        } else {
+            return PyLong_FromNativeBytes(bytes, sizeof(value), -1);
+        }
+#elif !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+        int one = 1; int little = (int)*(unsigned char *)&one;
         return _PyLong_FromByteArray(bytes, sizeof(unsigned long),
                                      little, !is_unsigned);
 #else
+        int one = 1; int little = (int)*(unsigned char *)&one;
         PyObject *from_bytes, *result = NULL;
         PyObject *py_bytes = NULL, *arg_tuple = NULL, *kwds = NULL, *order_str = NULL;
         from_bytes = PyObject_GetAttrString((PyObject*)&PyLong_Type, "from_bytes");
@@ -36872,245 +36933,239 @@ static CYTHON_INLINE unsigned long __Pyx_PyInt_As_unsigned_long(PyObject *x) {
             }
             return (unsigned long) val;
         }
-    } else
+    }
 #endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
+    if (unlikely(!PyLong_Check(x))) {
+        unsigned long val;
+        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
+        if (!tmp) return (unsigned long) -1;
+        val = __Pyx_PyInt_As_unsigned_long(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+    if (is_unsigned) {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (unlikely(__Pyx_PyLong_IsNeg(x))) {
-                goto raise_neg_overflow;
-            } else if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(unsigned long, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_DigitCount(x)) {
-                    case 2:
-                        if ((8 * sizeof(unsigned long) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) >= 2 * PyLong_SHIFT)) {
-                                return (unsigned long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                            }
-                        }
-                        break;
-                    case 3:
+        if (unlikely(__Pyx_PyLong_IsNeg(x))) {
+            goto raise_neg_overflow;
+        } else if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(unsigned long, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_DigitCount(x)) {
+                case 2:
+                    if ((8 * sizeof(unsigned long) > 1 * PyLong_SHIFT)) {
                         if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) >= 3 * PyLong_SHIFT)) {
-                                return (unsigned long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                            }
+                            __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) >= 2 * PyLong_SHIFT)) {
+                            return (unsigned long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
                         }
-                        break;
-                    case 4:
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
                         if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) >= 4 * PyLong_SHIFT)) {
-                                return (unsigned long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
-                            }
+                            __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) >= 3 * PyLong_SHIFT)) {
+                            return (unsigned long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
                         }
-                        break;
-                }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) >= 4 * PyLong_SHIFT)) {
+                            return (unsigned long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0]));
+                        }
+                    }
+                    break;
             }
+        }
 #endif
 #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
-            if (unlikely(Py_SIZE(x) < 0)) {
-                goto raise_neg_overflow;
-            }
+        if (unlikely(Py_SIZE(x) < 0)) {
+            goto raise_neg_overflow;
+        }
 #else
-            {
-                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                if (unlikely(result < 0))
-                    return (unsigned long) -1;
-                if (unlikely(result == 1))
-                    goto raise_neg_overflow;
-            }
+        {
+            int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
+            if (unlikely(result < 0))
+                return (unsigned long) -1;
+            if (unlikely(result == 1))
+                goto raise_neg_overflow;
+        }
 #endif
-            if ((sizeof(unsigned long) <= sizeof(unsigned long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned long, unsigned long, PyLong_AsUnsignedLong(x))
+        if ((sizeof(unsigned long) <= sizeof(unsigned long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned long, unsigned long, PyLong_AsUnsignedLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(unsigned long) <= sizeof(unsigned PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+        } else if ((sizeof(unsigned long) <= sizeof(unsigned PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
 #endif
-            }
-        } else {
+        }
+    } else {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(unsigned long, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_SignedDigitCount(x)) {
-                    case -2:
-                        if ((8 * sizeof(unsigned long) - 1 > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) - 1 > 2 * PyLong_SHIFT)) {
-                                return (unsigned long) (((unsigned long)-1)*(((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
-                            }
-                        }
-                        break;
-                    case 2:
-                        if ((8 * sizeof(unsigned long) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) - 1 > 2 * PyLong_SHIFT)) {
-                                return (unsigned long) ((((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
-                            }
-                        }
-                        break;
-                    case -3:
-                        if ((8 * sizeof(unsigned long) - 1 > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) - 1 > 3 * PyLong_SHIFT)) {
-                                return (unsigned long) (((unsigned long)-1)*(((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
-                            }
+        if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(unsigned long, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_SignedDigitCount(x)) {
+                case -2:
+                    if ((8 * sizeof(unsigned long) - 1 > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) - 1 > 2 * PyLong_SHIFT)) {
+                            return (unsigned long) (((unsigned long)-1)*(((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
                         }
-                        break;
-                    case 3:
+                    }
+                    break;
+                case 2:
+                    if ((8 * sizeof(unsigned long) > 1 * PyLong_SHIFT)) {
                         if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) - 1 > 3 * PyLong_SHIFT)) {
-                                return (unsigned long) ((((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
-                            }
+                            __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) - 1 > 2 * PyLong_SHIFT)) {
+                            return (unsigned long) ((((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
                         }
-                        break;
-                    case -4:
-                        if ((8 * sizeof(unsigned long) - 1 > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) - 1 > 4 * PyLong_SHIFT)) {
-                                return (unsigned long) (((unsigned long)-1)*(((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
-                            }
+                    }
+                    break;
+                case -3:
+                    if ((8 * sizeof(unsigned long) - 1 > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) - 1 > 3 * PyLong_SHIFT)) {
+                            return (unsigned long) (((unsigned long)-1)*(((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
                         }
-                        break;
-                    case 4:
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
                         if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned long) - 1 > 4 * PyLong_SHIFT)) {
-                                return (unsigned long) ((((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
-                            }
+                            __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) - 1 > 3 * PyLong_SHIFT)) {
+                            return (unsigned long) ((((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
                         }
-                        break;
-                }
+                    }
+                    break;
+                case -4:
+                    if ((8 * sizeof(unsigned long) - 1 > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) - 1 > 4 * PyLong_SHIFT)) {
+                            return (unsigned long) (((unsigned long)-1)*(((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
+                        }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned long) - 1 > 4 * PyLong_SHIFT)) {
+                            return (unsigned long) ((((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])));
+                        }
+                    }
+                    break;
             }
+        }
 #endif
-            if ((sizeof(unsigned long) <= sizeof(long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned long, long, PyLong_AsLong(x))
+        if ((sizeof(unsigned long) <= sizeof(long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned long, long, PyLong_AsLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(unsigned long) <= sizeof(PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned long, PY_LONG_LONG, PyLong_AsLongLong(x))
+        } else if ((sizeof(unsigned long) <= sizeof(PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned long, PY_LONG_LONG, PyLong_AsLongLong(x))
 #endif
-            }
+        }
+    }
+    {
+        unsigned long val;
+        int ret = -1;
+#if PY_VERSION_HEX >= 0x030d00A6 && !CYTHON_COMPILING_IN_LIMITED_API
+        Py_ssize_t bytes_copied = PyLong_AsNativeBytes(
+            x, &val, sizeof(val), Py_ASNATIVEBYTES_NATIVE_ENDIAN | (is_unsigned ? Py_ASNATIVEBYTES_UNSIGNED_BUFFER | Py_ASNATIVEBYTES_REJECT_NEGATIVE : 0));
+        if (unlikely(bytes_copied == -1)) {
+        } else if (unlikely(bytes_copied > (Py_ssize_t) sizeof(val))) {
+            goto raise_overflow;
+        } else {
+            ret = 0;
+        }
+#elif PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
+        int one = 1; int is_little = (int)*(unsigned char *)&one;
+        unsigned char *bytes = (unsigned char *)&val;
+        ret = _PyLong_AsByteArray((PyLongObject *)x,
+                                    bytes, sizeof(val),
+                                    is_little, !is_unsigned);
+#else
+        PyObject *v;
+        PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
+        int bits, remaining_bits, is_negative = 0;
+        int chunk_size = (sizeof(long) < 8) ? 30 : 62;
+        if (likely(PyLong_CheckExact(x))) {
+            v = __Pyx_NewRef(x);
+        } else {
+            v = PyNumber_Long(x);
+            if (unlikely(!v)) return (unsigned long) -1;
+            assert(PyLong_CheckExact(v));
         }
         {
-            unsigned long val;
-            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
-#if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
-#endif
-            if (likely(v)) {
-                int ret = -1;
-#if PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                           bytes, sizeof(val),
-                                           is_little, !is_unsigned);
-#else
-                PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
-                int bits, remaining_bits, is_negative = 0;
-                long idigit;
-                int chunk_size = (sizeof(long) < 8) ? 30 : 62;
-                if (unlikely(!PyLong_CheckExact(v))) {
-                    PyObject *tmp = v;
-                    v = PyNumber_Long(v);
-                    assert(PyLong_CheckExact(v));
-                    Py_DECREF(tmp);
-                    if (unlikely(!v)) return (unsigned long) -1;
-                }
-#if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                if (Py_SIZE(x) == 0)
-                    return (unsigned long) 0;
-                is_negative = Py_SIZE(x) < 0;
-#else
-                {
-                    int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                    if (unlikely(result < 0))
-                        return (unsigned long) -1;
-                    is_negative = result == 1;
-                }
-#endif
-                if (is_unsigned && unlikely(is_negative)) {
-                    goto raise_neg_overflow;
-                } else if (is_negative) {
-                    stepval = PyNumber_Invert(v);
-                    if (unlikely(!stepval))
-                        return (unsigned long) -1;
-                } else {
-                    stepval = __Pyx_NewRef(v);
-                }
-                val = (unsigned long) 0;
-                mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
-                shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
-                for (bits = 0; bits < (int) sizeof(unsigned long) * 8 - chunk_size; bits += chunk_size) {
-                    PyObject *tmp, *digit;
-                    digit = PyNumber_And(stepval, mask);
-                    if (unlikely(!digit)) goto done;
-                    idigit = PyLong_AsLong(digit);
-                    Py_DECREF(digit);
-                    if (unlikely(idigit < 0)) goto done;
-                    tmp = PyNumber_Rshift(stepval, shift);
-                    if (unlikely(!tmp)) goto done;
-                    Py_DECREF(stepval); stepval = tmp;
-                    val |= ((unsigned long) idigit) << bits;
-                    #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                    if (Py_SIZE(stepval) == 0)
-                        goto unpacking_done;
-                    #endif
-                }
-                idigit = PyLong_AsLong(stepval);
-                if (unlikely(idigit < 0)) goto done;
-                remaining_bits = ((int) sizeof(unsigned long) * 8) - bits - (is_unsigned ? 0 : 1);
-                if (unlikely(idigit >= (1L << remaining_bits)))
-                    goto raise_overflow;
-                val |= ((unsigned long) idigit) << bits;
-            #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-            unpacking_done:
-            #endif
-                if (!is_unsigned) {
-                    if (unlikely(val & (((unsigned long) 1) << (sizeof(unsigned long) * 8 - 1))))
-                        goto raise_overflow;
-                    if (is_negative)
-                        val = ~val;
-                }
-                ret = 0;
-            done:
-                Py_XDECREF(shift);
-                Py_XDECREF(mask);
-                Py_XDECREF(stepval);
-#endif
+            int result = PyObject_RichCompareBool(v, Py_False, Py_LT);
+            if (unlikely(result < 0)) {
                 Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
+                return (unsigned long) -1;
             }
-            return (unsigned long) -1;
+            is_negative = result == 1;
         }
-    } else {
-        unsigned long val;
-        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
-        if (!tmp) return (unsigned long) -1;
-        val = __Pyx_PyInt_As_unsigned_long(tmp);
-        Py_DECREF(tmp);
+        if (is_unsigned && unlikely(is_negative)) {
+            Py_DECREF(v);
+            goto raise_neg_overflow;
+        } else if (is_negative) {
+            stepval = PyNumber_Invert(v);
+            Py_DECREF(v);
+            if (unlikely(!stepval))
+                return (unsigned long) -1;
+        } else {
+            stepval = v;
+        }
+        v = NULL;
+        val = (unsigned long) 0;
+        mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
+        shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
+        for (bits = 0; bits < (int) sizeof(unsigned long) * 8 - chunk_size; bits += chunk_size) {
+            PyObject *tmp, *digit;
+            long idigit;
+            digit = PyNumber_And(stepval, mask);
+            if (unlikely(!digit)) goto done;
+            idigit = PyLong_AsLong(digit);
+            Py_DECREF(digit);
+            if (unlikely(idigit < 0)) goto done;
+            val |= ((unsigned long) idigit) << bits;
+            tmp = PyNumber_Rshift(stepval, shift);
+            if (unlikely(!tmp)) goto done;
+            Py_DECREF(stepval); stepval = tmp;
+        }
+        Py_DECREF(shift); shift = NULL;
+        Py_DECREF(mask); mask = NULL;
+        {
+            long idigit = PyLong_AsLong(stepval);
+            if (unlikely(idigit < 0)) goto done;
+            remaining_bits = ((int) sizeof(unsigned long) * 8) - bits - (is_unsigned ? 0 : 1);
+            if (unlikely(idigit >= (1L << remaining_bits)))
+                goto raise_overflow;
+            val |= ((unsigned long) idigit) << bits;
+        }
+        if (!is_unsigned) {
+            if (unlikely(val & (((unsigned long) 1) << (sizeof(unsigned long) * 8 - 1))))
+                goto raise_overflow;
+            if (is_negative)
+                val = ~val;
+        }
+        ret = 0;
+    done:
+        Py_XDECREF(shift);
+        Py_XDECREF(mask);
+        Py_XDECREF(stepval);
+#endif
+        if (unlikely(ret))
+            return (unsigned long) -1;
         return val;
     }
 raise_overflow:
@@ -37145,245 +37200,239 @@ static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
             }
             return (int) val;
         }
-    } else
+    }
 #endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
+    if (unlikely(!PyLong_Check(x))) {
+        int val;
+        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
+        if (!tmp) return (int) -1;
+        val = __Pyx_PyInt_As_int(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+    if (is_unsigned) {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (unlikely(__Pyx_PyLong_IsNeg(x))) {
-                goto raise_neg_overflow;
-            } else if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(int, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_DigitCount(x)) {
-                    case 2:
-                        if ((8 * sizeof(int) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) >= 2 * PyLong_SHIFT)) {
-                                return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
-                            }
+        if (unlikely(__Pyx_PyLong_IsNeg(x))) {
+            goto raise_neg_overflow;
+        } else if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(int, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_DigitCount(x)) {
+                case 2:
+                    if ((8 * sizeof(int) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) >= 2 * PyLong_SHIFT)) {
+                            return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(int) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) >= 3 * PyLong_SHIFT)) {
-                                return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(int) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) >= 3 * PyLong_SHIFT)) {
+                            return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(int) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) >= 4 * PyLong_SHIFT)) {
-                                return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(int) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) >= 4 * PyLong_SHIFT)) {
+                            return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
 #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
-            if (unlikely(Py_SIZE(x) < 0)) {
-                goto raise_neg_overflow;
-            }
+        if (unlikely(Py_SIZE(x) < 0)) {
+            goto raise_neg_overflow;
+        }
 #else
-            {
-                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                if (unlikely(result < 0))
-                    return (int) -1;
-                if (unlikely(result == 1))
-                    goto raise_neg_overflow;
-            }
+        {
+            int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
+            if (unlikely(result < 0))
+                return (int) -1;
+            if (unlikely(result == 1))
+                goto raise_neg_overflow;
+        }
 #endif
-            if ((sizeof(int) <= sizeof(unsigned long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
+        if ((sizeof(int) <= sizeof(unsigned long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(int) <= sizeof(unsigned PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+        } else if ((sizeof(int) <= sizeof(unsigned PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
 #endif
-            }
-        } else {
+        }
+    } else {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(int, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_SignedDigitCount(x)) {
-                    case -2:
-                        if ((8 * sizeof(int) - 1 > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) - 1 > 2 * PyLong_SHIFT)) {
-                                return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
-                            }
+        if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(int, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_SignedDigitCount(x)) {
+                case -2:
+                    if ((8 * sizeof(int) - 1 > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) - 1 > 2 * PyLong_SHIFT)) {
+                            return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                         }
-                        break;
-                    case 2:
-                        if ((8 * sizeof(int) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) - 1 > 2 * PyLong_SHIFT)) {
-                                return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
-                            }
+                    }
+                    break;
+                case 2:
+                    if ((8 * sizeof(int) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) - 1 > 2 * PyLong_SHIFT)) {
+                            return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                         }
-                        break;
-                    case -3:
-                        if ((8 * sizeof(int) - 1 > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) - 1 > 3 * PyLong_SHIFT)) {
-                                return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
-                            }
+                    }
+                    break;
+                case -3:
+                    if ((8 * sizeof(int) - 1 > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) - 1 > 3 * PyLong_SHIFT)) {
+                            return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(int) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) - 1 > 3 * PyLong_SHIFT)) {
-                                return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(int) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) - 1 > 3 * PyLong_SHIFT)) {
+                            return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                         }
-                        break;
-                    case -4:
-                        if ((8 * sizeof(int) - 1 > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) - 1 > 4 * PyLong_SHIFT)) {
-                                return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
-                            }
+                    }
+                    break;
+                case -4:
+                    if ((8 * sizeof(int) - 1 > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) - 1 > 4 * PyLong_SHIFT)) {
+                            return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(int) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(int) - 1 > 4 * PyLong_SHIFT)) {
-                                return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(int) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(int) - 1 > 4 * PyLong_SHIFT)) {
+                            return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
-            if ((sizeof(int) <= sizeof(long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
+        if ((sizeof(int) <= sizeof(long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(int) <= sizeof(PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
+        } else if ((sizeof(int) <= sizeof(PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
 #endif
-            }
+        }
+    }
+    {
+        int val;
+        int ret = -1;
+#if PY_VERSION_HEX >= 0x030d00A6 && !CYTHON_COMPILING_IN_LIMITED_API
+        Py_ssize_t bytes_copied = PyLong_AsNativeBytes(
+            x, &val, sizeof(val), Py_ASNATIVEBYTES_NATIVE_ENDIAN | (is_unsigned ? Py_ASNATIVEBYTES_UNSIGNED_BUFFER | Py_ASNATIVEBYTES_REJECT_NEGATIVE : 0));
+        if (unlikely(bytes_copied == -1)) {
+        } else if (unlikely(bytes_copied > (Py_ssize_t) sizeof(val))) {
+            goto raise_overflow;
+        } else {
+            ret = 0;
+        }
+#elif PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
+        int one = 1; int is_little = (int)*(unsigned char *)&one;
+        unsigned char *bytes = (unsigned char *)&val;
+        ret = _PyLong_AsByteArray((PyLongObject *)x,
+                                    bytes, sizeof(val),
+                                    is_little, !is_unsigned);
+#else
+        PyObject *v;
+        PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
+        int bits, remaining_bits, is_negative = 0;
+        int chunk_size = (sizeof(long) < 8) ? 30 : 62;
+        if (likely(PyLong_CheckExact(x))) {
+            v = __Pyx_NewRef(x);
+        } else {
+            v = PyNumber_Long(x);
+            if (unlikely(!v)) return (int) -1;
+            assert(PyLong_CheckExact(v));
         }
         {
-            int val;
-            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
-#if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
-#endif
-            if (likely(v)) {
-                int ret = -1;
-#if PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                           bytes, sizeof(val),
-                                           is_little, !is_unsigned);
-#else
-                PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
-                int bits, remaining_bits, is_negative = 0;
-                long idigit;
-                int chunk_size = (sizeof(long) < 8) ? 30 : 62;
-                if (unlikely(!PyLong_CheckExact(v))) {
-                    PyObject *tmp = v;
-                    v = PyNumber_Long(v);
-                    assert(PyLong_CheckExact(v));
-                    Py_DECREF(tmp);
-                    if (unlikely(!v)) return (int) -1;
-                }
-#if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                if (Py_SIZE(x) == 0)
-                    return (int) 0;
-                is_negative = Py_SIZE(x) < 0;
-#else
-                {
-                    int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                    if (unlikely(result < 0))
-                        return (int) -1;
-                    is_negative = result == 1;
-                }
-#endif
-                if (is_unsigned && unlikely(is_negative)) {
-                    goto raise_neg_overflow;
-                } else if (is_negative) {
-                    stepval = PyNumber_Invert(v);
-                    if (unlikely(!stepval))
-                        return (int) -1;
-                } else {
-                    stepval = __Pyx_NewRef(v);
-                }
-                val = (int) 0;
-                mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
-                shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
-                for (bits = 0; bits < (int) sizeof(int) * 8 - chunk_size; bits += chunk_size) {
-                    PyObject *tmp, *digit;
-                    digit = PyNumber_And(stepval, mask);
-                    if (unlikely(!digit)) goto done;
-                    idigit = PyLong_AsLong(digit);
-                    Py_DECREF(digit);
-                    if (unlikely(idigit < 0)) goto done;
-                    tmp = PyNumber_Rshift(stepval, shift);
-                    if (unlikely(!tmp)) goto done;
-                    Py_DECREF(stepval); stepval = tmp;
-                    val |= ((int) idigit) << bits;
-                    #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                    if (Py_SIZE(stepval) == 0)
-                        goto unpacking_done;
-                    #endif
-                }
-                idigit = PyLong_AsLong(stepval);
-                if (unlikely(idigit < 0)) goto done;
-                remaining_bits = ((int) sizeof(int) * 8) - bits - (is_unsigned ? 0 : 1);
-                if (unlikely(idigit >= (1L << remaining_bits)))
-                    goto raise_overflow;
-                val |= ((int) idigit) << bits;
-            #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-            unpacking_done:
-            #endif
-                if (!is_unsigned) {
-                    if (unlikely(val & (((int) 1) << (sizeof(int) * 8 - 1))))
-                        goto raise_overflow;
-                    if (is_negative)
-                        val = ~val;
-                }
-                ret = 0;
-            done:
-                Py_XDECREF(shift);
-                Py_XDECREF(mask);
-                Py_XDECREF(stepval);
-#endif
+            int result = PyObject_RichCompareBool(v, Py_False, Py_LT);
+            if (unlikely(result < 0)) {
                 Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
+                return (int) -1;
             }
-            return (int) -1;
+            is_negative = result == 1;
         }
-    } else {
-        int val;
-        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
-        if (!tmp) return (int) -1;
-        val = __Pyx_PyInt_As_int(tmp);
-        Py_DECREF(tmp);
+        if (is_unsigned && unlikely(is_negative)) {
+            Py_DECREF(v);
+            goto raise_neg_overflow;
+        } else if (is_negative) {
+            stepval = PyNumber_Invert(v);
+            Py_DECREF(v);
+            if (unlikely(!stepval))
+                return (int) -1;
+        } else {
+            stepval = v;
+        }
+        v = NULL;
+        val = (int) 0;
+        mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
+        shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
+        for (bits = 0; bits < (int) sizeof(int) * 8 - chunk_size; bits += chunk_size) {
+            PyObject *tmp, *digit;
+            long idigit;
+            digit = PyNumber_And(stepval, mask);
+            if (unlikely(!digit)) goto done;
+            idigit = PyLong_AsLong(digit);
+            Py_DECREF(digit);
+            if (unlikely(idigit < 0)) goto done;
+            val |= ((int) idigit) << bits;
+            tmp = PyNumber_Rshift(stepval, shift);
+            if (unlikely(!tmp)) goto done;
+            Py_DECREF(stepval); stepval = tmp;
+        }
+        Py_DECREF(shift); shift = NULL;
+        Py_DECREF(mask); mask = NULL;
+        {
+            long idigit = PyLong_AsLong(stepval);
+            if (unlikely(idigit < 0)) goto done;
+            remaining_bits = ((int) sizeof(int) * 8) - bits - (is_unsigned ? 0 : 1);
+            if (unlikely(idigit >= (1L << remaining_bits)))
+                goto raise_overflow;
+            val |= ((int) idigit) << bits;
+        }
+        if (!is_unsigned) {
+            if (unlikely(val & (((int) 1) << (sizeof(int) * 8 - 1))))
+                goto raise_overflow;
+            if (is_negative)
+                val = ~val;
+        }
+        ret = 0;
+    done:
+        Py_XDECREF(shift);
+        Py_XDECREF(mask);
+        Py_XDECREF(stepval);
+#endif
+        if (unlikely(ret))
+            return (int) -1;
         return val;
     }
 raise_overflow:
@@ -37418,245 +37467,239 @@ static CYTHON_INLINE unsigned int __Pyx_PyInt_As_unsigned_int(PyObject *x) {
             }
             return (unsigned int) val;
         }
-    } else
+    }
 #endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
+    if (unlikely(!PyLong_Check(x))) {
+        unsigned int val;
+        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
+        if (!tmp) return (unsigned int) -1;
+        val = __Pyx_PyInt_As_unsigned_int(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+    if (is_unsigned) {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (unlikely(__Pyx_PyLong_IsNeg(x))) {
-                goto raise_neg_overflow;
-            } else if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(unsigned int, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_DigitCount(x)) {
-                    case 2:
-                        if ((8 * sizeof(unsigned int) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) >= 2 * PyLong_SHIFT)) {
-                                return (unsigned int) (((((unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0]));
-                            }
+        if (unlikely(__Pyx_PyLong_IsNeg(x))) {
+            goto raise_neg_overflow;
+        } else if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(unsigned int, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_DigitCount(x)) {
+                case 2:
+                    if ((8 * sizeof(unsigned int) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) >= 2 * PyLong_SHIFT)) {
+                            return (unsigned int) (((((unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0]));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(unsigned int) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) >= 3 * PyLong_SHIFT)) {
-                                return (unsigned int) (((((((unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0]));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(unsigned int) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) >= 3 * PyLong_SHIFT)) {
+                            return (unsigned int) (((((((unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0]));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(unsigned int) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) >= 4 * PyLong_SHIFT)) {
-                                return (unsigned int) (((((((((unsigned int)digits[3]) << PyLong_SHIFT) | (unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0]));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(unsigned int) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) >= 4 * PyLong_SHIFT)) {
+                            return (unsigned int) (((((((((unsigned int)digits[3]) << PyLong_SHIFT) | (unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0]));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
 #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
-            if (unlikely(Py_SIZE(x) < 0)) {
-                goto raise_neg_overflow;
-            }
+        if (unlikely(Py_SIZE(x) < 0)) {
+            goto raise_neg_overflow;
+        }
 #else
-            {
-                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                if (unlikely(result < 0))
-                    return (unsigned int) -1;
-                if (unlikely(result == 1))
-                    goto raise_neg_overflow;
-            }
+        {
+            int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
+            if (unlikely(result < 0))
+                return (unsigned int) -1;
+            if (unlikely(result == 1))
+                goto raise_neg_overflow;
+        }
 #endif
-            if ((sizeof(unsigned int) <= sizeof(unsigned long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned int, unsigned long, PyLong_AsUnsignedLong(x))
+        if ((sizeof(unsigned int) <= sizeof(unsigned long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned int, unsigned long, PyLong_AsUnsignedLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(unsigned int) <= sizeof(unsigned PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+        } else if ((sizeof(unsigned int) <= sizeof(unsigned PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
 #endif
-            }
-        } else {
+        }
+    } else {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(unsigned int, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_SignedDigitCount(x)) {
-                    case -2:
-                        if ((8 * sizeof(unsigned int) - 1 > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) - 1 > 2 * PyLong_SHIFT)) {
-                                return (unsigned int) (((unsigned int)-1)*(((((unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
-                            }
+        if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(unsigned int, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_SignedDigitCount(x)) {
+                case -2:
+                    if ((8 * sizeof(unsigned int) - 1 > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) - 1 > 2 * PyLong_SHIFT)) {
+                            return (unsigned int) (((unsigned int)-1)*(((((unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
                         }
-                        break;
-                    case 2:
-                        if ((8 * sizeof(unsigned int) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) - 1 > 2 * PyLong_SHIFT)) {
-                                return (unsigned int) ((((((unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
-                            }
+                    }
+                    break;
+                case 2:
+                    if ((8 * sizeof(unsigned int) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) - 1 > 2 * PyLong_SHIFT)) {
+                            return (unsigned int) ((((((unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
                         }
-                        break;
-                    case -3:
-                        if ((8 * sizeof(unsigned int) - 1 > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) - 1 > 3 * PyLong_SHIFT)) {
-                                return (unsigned int) (((unsigned int)-1)*(((((((unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
-                            }
+                    }
+                    break;
+                case -3:
+                    if ((8 * sizeof(unsigned int) - 1 > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) - 1 > 3 * PyLong_SHIFT)) {
+                            return (unsigned int) (((unsigned int)-1)*(((((((unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(unsigned int) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) - 1 > 3 * PyLong_SHIFT)) {
-                                return (unsigned int) ((((((((unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(unsigned int) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) - 1 > 3 * PyLong_SHIFT)) {
+                            return (unsigned int) ((((((((unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
                         }
-                        break;
-                    case -4:
-                        if ((8 * sizeof(unsigned int) - 1 > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) - 1 > 4 * PyLong_SHIFT)) {
-                                return (unsigned int) (((unsigned int)-1)*(((((((((unsigned int)digits[3]) << PyLong_SHIFT) | (unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
-                            }
+                    }
+                    break;
+                case -4:
+                    if ((8 * sizeof(unsigned int) - 1 > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) - 1 > 4 * PyLong_SHIFT)) {
+                            return (unsigned int) (((unsigned int)-1)*(((((((((unsigned int)digits[3]) << PyLong_SHIFT) | (unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(unsigned int) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned int) - 1 > 4 * PyLong_SHIFT)) {
-                                return (unsigned int) ((((((((((unsigned int)digits[3]) << PyLong_SHIFT) | (unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(unsigned int) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned int) - 1 > 4 * PyLong_SHIFT)) {
+                            return (unsigned int) ((((((((((unsigned int)digits[3]) << PyLong_SHIFT) | (unsigned int)digits[2]) << PyLong_SHIFT) | (unsigned int)digits[1]) << PyLong_SHIFT) | (unsigned int)digits[0])));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
-            if ((sizeof(unsigned int) <= sizeof(long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned int, long, PyLong_AsLong(x))
+        if ((sizeof(unsigned int) <= sizeof(long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned int, long, PyLong_AsLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(unsigned int) <= sizeof(PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned int, PY_LONG_LONG, PyLong_AsLongLong(x))
+        } else if ((sizeof(unsigned int) <= sizeof(PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned int, PY_LONG_LONG, PyLong_AsLongLong(x))
 #endif
-            }
+        }
+    }
+    {
+        unsigned int val;
+        int ret = -1;
+#if PY_VERSION_HEX >= 0x030d00A6 && !CYTHON_COMPILING_IN_LIMITED_API
+        Py_ssize_t bytes_copied = PyLong_AsNativeBytes(
+            x, &val, sizeof(val), Py_ASNATIVEBYTES_NATIVE_ENDIAN | (is_unsigned ? Py_ASNATIVEBYTES_UNSIGNED_BUFFER | Py_ASNATIVEBYTES_REJECT_NEGATIVE : 0));
+        if (unlikely(bytes_copied == -1)) {
+        } else if (unlikely(bytes_copied > (Py_ssize_t) sizeof(val))) {
+            goto raise_overflow;
+        } else {
+            ret = 0;
+        }
+#elif PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
+        int one = 1; int is_little = (int)*(unsigned char *)&one;
+        unsigned char *bytes = (unsigned char *)&val;
+        ret = _PyLong_AsByteArray((PyLongObject *)x,
+                                    bytes, sizeof(val),
+                                    is_little, !is_unsigned);
+#else
+        PyObject *v;
+        PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
+        int bits, remaining_bits, is_negative = 0;
+        int chunk_size = (sizeof(long) < 8) ? 30 : 62;
+        if (likely(PyLong_CheckExact(x))) {
+            v = __Pyx_NewRef(x);
+        } else {
+            v = PyNumber_Long(x);
+            if (unlikely(!v)) return (unsigned int) -1;
+            assert(PyLong_CheckExact(v));
         }
         {
-            unsigned int val;
-            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
-#if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
-#endif
-            if (likely(v)) {
-                int ret = -1;
-#if PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                           bytes, sizeof(val),
-                                           is_little, !is_unsigned);
-#else
-                PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
-                int bits, remaining_bits, is_negative = 0;
-                long idigit;
-                int chunk_size = (sizeof(long) < 8) ? 30 : 62;
-                if (unlikely(!PyLong_CheckExact(v))) {
-                    PyObject *tmp = v;
-                    v = PyNumber_Long(v);
-                    assert(PyLong_CheckExact(v));
-                    Py_DECREF(tmp);
-                    if (unlikely(!v)) return (unsigned int) -1;
-                }
-#if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                if (Py_SIZE(x) == 0)
-                    return (unsigned int) 0;
-                is_negative = Py_SIZE(x) < 0;
-#else
-                {
-                    int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                    if (unlikely(result < 0))
-                        return (unsigned int) -1;
-                    is_negative = result == 1;
-                }
-#endif
-                if (is_unsigned && unlikely(is_negative)) {
-                    goto raise_neg_overflow;
-                } else if (is_negative) {
-                    stepval = PyNumber_Invert(v);
-                    if (unlikely(!stepval))
-                        return (unsigned int) -1;
-                } else {
-                    stepval = __Pyx_NewRef(v);
-                }
-                val = (unsigned int) 0;
-                mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
-                shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
-                for (bits = 0; bits < (int) sizeof(unsigned int) * 8 - chunk_size; bits += chunk_size) {
-                    PyObject *tmp, *digit;
-                    digit = PyNumber_And(stepval, mask);
-                    if (unlikely(!digit)) goto done;
-                    idigit = PyLong_AsLong(digit);
-                    Py_DECREF(digit);
-                    if (unlikely(idigit < 0)) goto done;
-                    tmp = PyNumber_Rshift(stepval, shift);
-                    if (unlikely(!tmp)) goto done;
-                    Py_DECREF(stepval); stepval = tmp;
-                    val |= ((unsigned int) idigit) << bits;
-                    #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                    if (Py_SIZE(stepval) == 0)
-                        goto unpacking_done;
-                    #endif
-                }
-                idigit = PyLong_AsLong(stepval);
-                if (unlikely(idigit < 0)) goto done;
-                remaining_bits = ((int) sizeof(unsigned int) * 8) - bits - (is_unsigned ? 0 : 1);
-                if (unlikely(idigit >= (1L << remaining_bits)))
-                    goto raise_overflow;
-                val |= ((unsigned int) idigit) << bits;
-            #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-            unpacking_done:
-            #endif
-                if (!is_unsigned) {
-                    if (unlikely(val & (((unsigned int) 1) << (sizeof(unsigned int) * 8 - 1))))
-                        goto raise_overflow;
-                    if (is_negative)
-                        val = ~val;
-                }
-                ret = 0;
-            done:
-                Py_XDECREF(shift);
-                Py_XDECREF(mask);
-                Py_XDECREF(stepval);
-#endif
+            int result = PyObject_RichCompareBool(v, Py_False, Py_LT);
+            if (unlikely(result < 0)) {
                 Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
+                return (unsigned int) -1;
             }
-            return (unsigned int) -1;
+            is_negative = result == 1;
         }
-    } else {
-        unsigned int val;
-        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
-        if (!tmp) return (unsigned int) -1;
-        val = __Pyx_PyInt_As_unsigned_int(tmp);
-        Py_DECREF(tmp);
+        if (is_unsigned && unlikely(is_negative)) {
+            Py_DECREF(v);
+            goto raise_neg_overflow;
+        } else if (is_negative) {
+            stepval = PyNumber_Invert(v);
+            Py_DECREF(v);
+            if (unlikely(!stepval))
+                return (unsigned int) -1;
+        } else {
+            stepval = v;
+        }
+        v = NULL;
+        val = (unsigned int) 0;
+        mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
+        shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
+        for (bits = 0; bits < (int) sizeof(unsigned int) * 8 - chunk_size; bits += chunk_size) {
+            PyObject *tmp, *digit;
+            long idigit;
+            digit = PyNumber_And(stepval, mask);
+            if (unlikely(!digit)) goto done;
+            idigit = PyLong_AsLong(digit);
+            Py_DECREF(digit);
+            if (unlikely(idigit < 0)) goto done;
+            val |= ((unsigned int) idigit) << bits;
+            tmp = PyNumber_Rshift(stepval, shift);
+            if (unlikely(!tmp)) goto done;
+            Py_DECREF(stepval); stepval = tmp;
+        }
+        Py_DECREF(shift); shift = NULL;
+        Py_DECREF(mask); mask = NULL;
+        {
+            long idigit = PyLong_AsLong(stepval);
+            if (unlikely(idigit < 0)) goto done;
+            remaining_bits = ((int) sizeof(unsigned int) * 8) - bits - (is_unsigned ? 0 : 1);
+            if (unlikely(idigit >= (1L << remaining_bits)))
+                goto raise_overflow;
+            val |= ((unsigned int) idigit) << bits;
+        }
+        if (!is_unsigned) {
+            if (unlikely(val & (((unsigned int) 1) << (sizeof(unsigned int) * 8 - 1))))
+                goto raise_overflow;
+            if (is_negative)
+                val = ~val;
+        }
+        ret = 0;
+    done:
+        Py_XDECREF(shift);
+        Py_XDECREF(mask);
+        Py_XDECREF(stepval);
+#endif
+        if (unlikely(ret))
+            return (unsigned int) -1;
         return val;
     }
 raise_overflow:
@@ -37691,245 +37734,239 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
             }
             return (long) val;
         }
-    } else
+    }
 #endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
+    if (unlikely(!PyLong_Check(x))) {
+        long val;
+        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
+        if (!tmp) return (long) -1;
+        val = __Pyx_PyInt_As_long(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+    if (is_unsigned) {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (unlikely(__Pyx_PyLong_IsNeg(x))) {
-                goto raise_neg_overflow;
-            } else if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(long, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_DigitCount(x)) {
-                    case 2:
-                        if ((8 * sizeof(long) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) >= 2 * PyLong_SHIFT)) {
-                                return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
-                            }
+        if (unlikely(__Pyx_PyLong_IsNeg(x))) {
+            goto raise_neg_overflow;
+        } else if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(long, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_DigitCount(x)) {
+                case 2:
+                    if ((8 * sizeof(long) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) >= 2 * PyLong_SHIFT)) {
+                            return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(long) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) >= 3 * PyLong_SHIFT)) {
-                                return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(long) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) >= 3 * PyLong_SHIFT)) {
+                            return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(long) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) >= 4 * PyLong_SHIFT)) {
-                                return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(long) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) >= 4 * PyLong_SHIFT)) {
+                            return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
 #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
-            if (unlikely(Py_SIZE(x) < 0)) {
-                goto raise_neg_overflow;
-            }
+        if (unlikely(Py_SIZE(x) < 0)) {
+            goto raise_neg_overflow;
+        }
 #else
-            {
-                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                if (unlikely(result < 0))
-                    return (long) -1;
-                if (unlikely(result == 1))
-                    goto raise_neg_overflow;
-            }
+        {
+            int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
+            if (unlikely(result < 0))
+                return (long) -1;
+            if (unlikely(result == 1))
+                goto raise_neg_overflow;
+        }
 #endif
-            if ((sizeof(long) <= sizeof(unsigned long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
+        if ((sizeof(long) <= sizeof(unsigned long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(long) <= sizeof(unsigned PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+        } else if ((sizeof(long) <= sizeof(unsigned PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
 #endif
-            }
-        } else {
+        }
+    } else {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(long, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_SignedDigitCount(x)) {
-                    case -2:
-                        if ((8 * sizeof(long) - 1 > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) - 1 > 2 * PyLong_SHIFT)) {
-                                return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
-                            }
+        if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(long, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_SignedDigitCount(x)) {
+                case -2:
+                    if ((8 * sizeof(long) - 1 > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) - 1 > 2 * PyLong_SHIFT)) {
+                            return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                         }
-                        break;
-                    case 2:
-                        if ((8 * sizeof(long) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) - 1 > 2 * PyLong_SHIFT)) {
-                                return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
-                            }
+                    }
+                    break;
+                case 2:
+                    if ((8 * sizeof(long) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) - 1 > 2 * PyLong_SHIFT)) {
+                            return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                         }
-                        break;
-                    case -3:
-                        if ((8 * sizeof(long) - 1 > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) - 1 > 3 * PyLong_SHIFT)) {
-                                return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
-                            }
+                    }
+                    break;
+                case -3:
+                    if ((8 * sizeof(long) - 1 > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) - 1 > 3 * PyLong_SHIFT)) {
+                            return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(long) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) - 1 > 3 * PyLong_SHIFT)) {
-                                return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(long) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) - 1 > 3 * PyLong_SHIFT)) {
+                            return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                         }
-                        break;
-                    case -4:
-                        if ((8 * sizeof(long) - 1 > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) - 1 > 4 * PyLong_SHIFT)) {
-                                return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
-                            }
+                    }
+                    break;
+                case -4:
+                    if ((8 * sizeof(long) - 1 > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) - 1 > 4 * PyLong_SHIFT)) {
+                            return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(long) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(long) - 1 > 4 * PyLong_SHIFT)) {
-                                return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(long) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(long) - 1 > 4 * PyLong_SHIFT)) {
+                            return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
-            if ((sizeof(long) <= sizeof(long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
+        if ((sizeof(long) <= sizeof(long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(long) <= sizeof(PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
+        } else if ((sizeof(long) <= sizeof(PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
 #endif
-            }
+        }
+    }
+    {
+        long val;
+        int ret = -1;
+#if PY_VERSION_HEX >= 0x030d00A6 && !CYTHON_COMPILING_IN_LIMITED_API
+        Py_ssize_t bytes_copied = PyLong_AsNativeBytes(
+            x, &val, sizeof(val), Py_ASNATIVEBYTES_NATIVE_ENDIAN | (is_unsigned ? Py_ASNATIVEBYTES_UNSIGNED_BUFFER | Py_ASNATIVEBYTES_REJECT_NEGATIVE : 0));
+        if (unlikely(bytes_copied == -1)) {
+        } else if (unlikely(bytes_copied > (Py_ssize_t) sizeof(val))) {
+            goto raise_overflow;
+        } else {
+            ret = 0;
+        }
+#elif PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
+        int one = 1; int is_little = (int)*(unsigned char *)&one;
+        unsigned char *bytes = (unsigned char *)&val;
+        ret = _PyLong_AsByteArray((PyLongObject *)x,
+                                    bytes, sizeof(val),
+                                    is_little, !is_unsigned);
+#else
+        PyObject *v;
+        PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
+        int bits, remaining_bits, is_negative = 0;
+        int chunk_size = (sizeof(long) < 8) ? 30 : 62;
+        if (likely(PyLong_CheckExact(x))) {
+            v = __Pyx_NewRef(x);
+        } else {
+            v = PyNumber_Long(x);
+            if (unlikely(!v)) return (long) -1;
+            assert(PyLong_CheckExact(v));
         }
         {
-            long val;
-            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
-#if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
-#endif
-            if (likely(v)) {
-                int ret = -1;
-#if PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                           bytes, sizeof(val),
-                                           is_little, !is_unsigned);
-#else
-                PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
-                int bits, remaining_bits, is_negative = 0;
-                long idigit;
-                int chunk_size = (sizeof(long) < 8) ? 30 : 62;
-                if (unlikely(!PyLong_CheckExact(v))) {
-                    PyObject *tmp = v;
-                    v = PyNumber_Long(v);
-                    assert(PyLong_CheckExact(v));
-                    Py_DECREF(tmp);
-                    if (unlikely(!v)) return (long) -1;
-                }
-#if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                if (Py_SIZE(x) == 0)
-                    return (long) 0;
-                is_negative = Py_SIZE(x) < 0;
-#else
-                {
-                    int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                    if (unlikely(result < 0))
-                        return (long) -1;
-                    is_negative = result == 1;
-                }
-#endif
-                if (is_unsigned && unlikely(is_negative)) {
-                    goto raise_neg_overflow;
-                } else if (is_negative) {
-                    stepval = PyNumber_Invert(v);
-                    if (unlikely(!stepval))
-                        return (long) -1;
-                } else {
-                    stepval = __Pyx_NewRef(v);
-                }
-                val = (long) 0;
-                mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
-                shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
-                for (bits = 0; bits < (int) sizeof(long) * 8 - chunk_size; bits += chunk_size) {
-                    PyObject *tmp, *digit;
-                    digit = PyNumber_And(stepval, mask);
-                    if (unlikely(!digit)) goto done;
-                    idigit = PyLong_AsLong(digit);
-                    Py_DECREF(digit);
-                    if (unlikely(idigit < 0)) goto done;
-                    tmp = PyNumber_Rshift(stepval, shift);
-                    if (unlikely(!tmp)) goto done;
-                    Py_DECREF(stepval); stepval = tmp;
-                    val |= ((long) idigit) << bits;
-                    #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                    if (Py_SIZE(stepval) == 0)
-                        goto unpacking_done;
-                    #endif
-                }
-                idigit = PyLong_AsLong(stepval);
-                if (unlikely(idigit < 0)) goto done;
-                remaining_bits = ((int) sizeof(long) * 8) - bits - (is_unsigned ? 0 : 1);
-                if (unlikely(idigit >= (1L << remaining_bits)))
-                    goto raise_overflow;
-                val |= ((long) idigit) << bits;
-            #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-            unpacking_done:
-            #endif
-                if (!is_unsigned) {
-                    if (unlikely(val & (((long) 1) << (sizeof(long) * 8 - 1))))
-                        goto raise_overflow;
-                    if (is_negative)
-                        val = ~val;
-                }
-                ret = 0;
-            done:
-                Py_XDECREF(shift);
-                Py_XDECREF(mask);
-                Py_XDECREF(stepval);
-#endif
+            int result = PyObject_RichCompareBool(v, Py_False, Py_LT);
+            if (unlikely(result < 0)) {
                 Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
+                return (long) -1;
             }
-            return (long) -1;
+            is_negative = result == 1;
         }
-    } else {
-        long val;
-        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
-        if (!tmp) return (long) -1;
-        val = __Pyx_PyInt_As_long(tmp);
-        Py_DECREF(tmp);
+        if (is_unsigned && unlikely(is_negative)) {
+            Py_DECREF(v);
+            goto raise_neg_overflow;
+        } else if (is_negative) {
+            stepval = PyNumber_Invert(v);
+            Py_DECREF(v);
+            if (unlikely(!stepval))
+                return (long) -1;
+        } else {
+            stepval = v;
+        }
+        v = NULL;
+        val = (long) 0;
+        mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
+        shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
+        for (bits = 0; bits < (int) sizeof(long) * 8 - chunk_size; bits += chunk_size) {
+            PyObject *tmp, *digit;
+            long idigit;
+            digit = PyNumber_And(stepval, mask);
+            if (unlikely(!digit)) goto done;
+            idigit = PyLong_AsLong(digit);
+            Py_DECREF(digit);
+            if (unlikely(idigit < 0)) goto done;
+            val |= ((long) idigit) << bits;
+            tmp = PyNumber_Rshift(stepval, shift);
+            if (unlikely(!tmp)) goto done;
+            Py_DECREF(stepval); stepval = tmp;
+        }
+        Py_DECREF(shift); shift = NULL;
+        Py_DECREF(mask); mask = NULL;
+        {
+            long idigit = PyLong_AsLong(stepval);
+            if (unlikely(idigit < 0)) goto done;
+            remaining_bits = ((int) sizeof(long) * 8) - bits - (is_unsigned ? 0 : 1);
+            if (unlikely(idigit >= (1L << remaining_bits)))
+                goto raise_overflow;
+            val |= ((long) idigit) << bits;
+        }
+        if (!is_unsigned) {
+            if (unlikely(val & (((long) 1) << (sizeof(long) * 8 - 1))))
+                goto raise_overflow;
+            if (is_negative)
+                val = ~val;
+        }
+        ret = 0;
+    done:
+        Py_XDECREF(shift);
+        Py_XDECREF(mask);
+        Py_XDECREF(stepval);
+#endif
+        if (unlikely(ret))
+            return (long) -1;
         return val;
     }
 raise_overflow:
@@ -37973,12 +38010,19 @@ static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value) {
         }
     }
     {
-        int one = 1; int little = (int)*(unsigned char *)&one;
         unsigned char *bytes = (unsigned char *)&value;
-#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX >= 0x030d00A4
+        if (is_unsigned) {
+            return PyLong_FromUnsignedNativeBytes(bytes, sizeof(value), -1);
+        } else {
+            return PyLong_FromNativeBytes(bytes, sizeof(value), -1);
+        }
+#elif !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+        int one = 1; int little = (int)*(unsigned char *)&one;
         return _PyLong_FromByteArray(bytes, sizeof(int),
                                      little, !is_unsigned);
 #else
+        int one = 1; int little = (int)*(unsigned char *)&one;
         PyObject *from_bytes, *result = NULL;
         PyObject *py_bytes = NULL, *arg_tuple = NULL, *kwds = NULL, *order_str = NULL;
         from_bytes = PyObject_GetAttrString((PyObject*)&PyLong_Type, "from_bytes");
@@ -38028,245 +38072,239 @@ static CYTHON_INLINE unsigned short __Pyx_PyInt_As_unsigned_short(PyObject *x) {
             }
             return (unsigned short) val;
         }
-    } else
+    }
 #endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
+    if (unlikely(!PyLong_Check(x))) {
+        unsigned short val;
+        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
+        if (!tmp) return (unsigned short) -1;
+        val = __Pyx_PyInt_As_unsigned_short(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+    if (is_unsigned) {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (unlikely(__Pyx_PyLong_IsNeg(x))) {
-                goto raise_neg_overflow;
-            } else if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(unsigned short, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_DigitCount(x)) {
-                    case 2:
-                        if ((8 * sizeof(unsigned short) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) >= 2 * PyLong_SHIFT)) {
-                                return (unsigned short) (((((unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0]));
-                            }
+        if (unlikely(__Pyx_PyLong_IsNeg(x))) {
+            goto raise_neg_overflow;
+        } else if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(unsigned short, __Pyx_compact_upylong, __Pyx_PyLong_CompactValueUnsigned(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_DigitCount(x)) {
+                case 2:
+                    if ((8 * sizeof(unsigned short) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) >= 2 * PyLong_SHIFT)) {
+                            return (unsigned short) (((((unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0]));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(unsigned short) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) >= 3 * PyLong_SHIFT)) {
-                                return (unsigned short) (((((((unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0]));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(unsigned short) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) >= 3 * PyLong_SHIFT)) {
+                            return (unsigned short) (((((((unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0]));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(unsigned short) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) >= 4 * PyLong_SHIFT)) {
-                                return (unsigned short) (((((((((unsigned short)digits[3]) << PyLong_SHIFT) | (unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0]));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(unsigned short) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) >= 4 * PyLong_SHIFT)) {
+                            return (unsigned short) (((((((((unsigned short)digits[3]) << PyLong_SHIFT) | (unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0]));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
 #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
-            if (unlikely(Py_SIZE(x) < 0)) {
-                goto raise_neg_overflow;
-            }
+        if (unlikely(Py_SIZE(x) < 0)) {
+            goto raise_neg_overflow;
+        }
 #else
-            {
-                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                if (unlikely(result < 0))
-                    return (unsigned short) -1;
-                if (unlikely(result == 1))
-                    goto raise_neg_overflow;
-            }
+        {
+            int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
+            if (unlikely(result < 0))
+                return (unsigned short) -1;
+            if (unlikely(result == 1))
+                goto raise_neg_overflow;
+        }
 #endif
-            if ((sizeof(unsigned short) <= sizeof(unsigned long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned short, unsigned long, PyLong_AsUnsignedLong(x))
+        if ((sizeof(unsigned short) <= sizeof(unsigned long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned short, unsigned long, PyLong_AsUnsignedLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(unsigned short) <= sizeof(unsigned PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned short, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+        } else if ((sizeof(unsigned short) <= sizeof(unsigned PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned short, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
 #endif
-            }
-        } else {
+        }
+    } else {
 #if CYTHON_USE_PYLONG_INTERNALS
-            if (__Pyx_PyLong_IsCompact(x)) {
-                __PYX_VERIFY_RETURN_INT(unsigned short, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
-            } else {
-                const digit* digits = __Pyx_PyLong_Digits(x);
-                assert(__Pyx_PyLong_DigitCount(x) > 1);
-                switch (__Pyx_PyLong_SignedDigitCount(x)) {
-                    case -2:
-                        if ((8 * sizeof(unsigned short) - 1 > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) - 1 > 2 * PyLong_SHIFT)) {
-                                return (unsigned short) (((unsigned short)-1)*(((((unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
-                            }
+        if (__Pyx_PyLong_IsCompact(x)) {
+            __PYX_VERIFY_RETURN_INT(unsigned short, __Pyx_compact_pylong, __Pyx_PyLong_CompactValue(x))
+        } else {
+            const digit* digits = __Pyx_PyLong_Digits(x);
+            assert(__Pyx_PyLong_DigitCount(x) > 1);
+            switch (__Pyx_PyLong_SignedDigitCount(x)) {
+                case -2:
+                    if ((8 * sizeof(unsigned short) - 1 > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) - 1 > 2 * PyLong_SHIFT)) {
+                            return (unsigned short) (((unsigned short)-1)*(((((unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
                         }
-                        break;
-                    case 2:
-                        if ((8 * sizeof(unsigned short) > 1 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) - 1 > 2 * PyLong_SHIFT)) {
-                                return (unsigned short) ((((((unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
-                            }
+                    }
+                    break;
+                case 2:
+                    if ((8 * sizeof(unsigned short) > 1 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 2 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) - 1 > 2 * PyLong_SHIFT)) {
+                            return (unsigned short) ((((((unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
                         }
-                        break;
-                    case -3:
-                        if ((8 * sizeof(unsigned short) - 1 > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) - 1 > 3 * PyLong_SHIFT)) {
-                                return (unsigned short) (((unsigned short)-1)*(((((((unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
-                            }
+                    }
+                    break;
+                case -3:
+                    if ((8 * sizeof(unsigned short) - 1 > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) - 1 > 3 * PyLong_SHIFT)) {
+                            return (unsigned short) (((unsigned short)-1)*(((((((unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
                         }
-                        break;
-                    case 3:
-                        if ((8 * sizeof(unsigned short) > 2 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) - 1 > 3 * PyLong_SHIFT)) {
-                                return (unsigned short) ((((((((unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
-                            }
+                    }
+                    break;
+                case 3:
+                    if ((8 * sizeof(unsigned short) > 2 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 3 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) - 1 > 3 * PyLong_SHIFT)) {
+                            return (unsigned short) ((((((((unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
                         }
-                        break;
-                    case -4:
-                        if ((8 * sizeof(unsigned short) - 1 > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) - 1 > 4 * PyLong_SHIFT)) {
-                                return (unsigned short) (((unsigned short)-1)*(((((((((unsigned short)digits[3]) << PyLong_SHIFT) | (unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
-                            }
+                    }
+                    break;
+                case -4:
+                    if ((8 * sizeof(unsigned short) - 1 > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) - 1 > 4 * PyLong_SHIFT)) {
+                            return (unsigned short) (((unsigned short)-1)*(((((((((unsigned short)digits[3]) << PyLong_SHIFT) | (unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
                         }
-                        break;
-                    case 4:
-                        if ((8 * sizeof(unsigned short) > 3 * PyLong_SHIFT)) {
-                            if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
-                                __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                            } else if ((8 * sizeof(unsigned short) - 1 > 4 * PyLong_SHIFT)) {
-                                return (unsigned short) ((((((((((unsigned short)digits[3]) << PyLong_SHIFT) | (unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
-                            }
+                    }
+                    break;
+                case 4:
+                    if ((8 * sizeof(unsigned short) > 3 * PyLong_SHIFT)) {
+                        if ((8 * sizeof(unsigned long) > 4 * PyLong_SHIFT)) {
+                            __PYX_VERIFY_RETURN_INT(unsigned short, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if ((8 * sizeof(unsigned short) - 1 > 4 * PyLong_SHIFT)) {
+                            return (unsigned short) ((((((((((unsigned short)digits[3]) << PyLong_SHIFT) | (unsigned short)digits[2]) << PyLong_SHIFT) | (unsigned short)digits[1]) << PyLong_SHIFT) | (unsigned short)digits[0])));
                         }
-                        break;
-                }
+                    }
+                    break;
             }
+        }
 #endif
-            if ((sizeof(unsigned short) <= sizeof(long))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned short, long, PyLong_AsLong(x))
+        if ((sizeof(unsigned short) <= sizeof(long))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned short, long, PyLong_AsLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if ((sizeof(unsigned short) <= sizeof(PY_LONG_LONG))) {
-                __PYX_VERIFY_RETURN_INT_EXC(unsigned short, PY_LONG_LONG, PyLong_AsLongLong(x))
+        } else if ((sizeof(unsigned short) <= sizeof(PY_LONG_LONG))) {
+            __PYX_VERIFY_RETURN_INT_EXC(unsigned short, PY_LONG_LONG, PyLong_AsLongLong(x))
 #endif
-            }
+        }
+    }
+    {
+        unsigned short val;
+        int ret = -1;
+#if PY_VERSION_HEX >= 0x030d00A6 && !CYTHON_COMPILING_IN_LIMITED_API
+        Py_ssize_t bytes_copied = PyLong_AsNativeBytes(
+            x, &val, sizeof(val), Py_ASNATIVEBYTES_NATIVE_ENDIAN | (is_unsigned ? Py_ASNATIVEBYTES_UNSIGNED_BUFFER | Py_ASNATIVEBYTES_REJECT_NEGATIVE : 0));
+        if (unlikely(bytes_copied == -1)) {
+        } else if (unlikely(bytes_copied > (Py_ssize_t) sizeof(val))) {
+            goto raise_overflow;
+        } else {
+            ret = 0;
+        }
+#elif PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
+        int one = 1; int is_little = (int)*(unsigned char *)&one;
+        unsigned char *bytes = (unsigned char *)&val;
+        ret = _PyLong_AsByteArray((PyLongObject *)x,
+                                    bytes, sizeof(val),
+                                    is_little, !is_unsigned);
+#else
+        PyObject *v;
+        PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
+        int bits, remaining_bits, is_negative = 0;
+        int chunk_size = (sizeof(long) < 8) ? 30 : 62;
+        if (likely(PyLong_CheckExact(x))) {
+            v = __Pyx_NewRef(x);
+        } else {
+            v = PyNumber_Long(x);
+            if (unlikely(!v)) return (unsigned short) -1;
+            assert(PyLong_CheckExact(v));
         }
         {
-            unsigned short val;
-            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
-#if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
-#endif
-            if (likely(v)) {
-                int ret = -1;
-#if PY_VERSION_HEX < 0x030d0000 && !(CYTHON_COMPILING_IN_PYPY || CYTHON_COMPILING_IN_LIMITED_API) || defined(_PyLong_AsByteArray)
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                           bytes, sizeof(val),
-                                           is_little, !is_unsigned);
-#else
-                PyObject *stepval = NULL, *mask = NULL, *shift = NULL;
-                int bits, remaining_bits, is_negative = 0;
-                long idigit;
-                int chunk_size = (sizeof(long) < 8) ? 30 : 62;
-                if (unlikely(!PyLong_CheckExact(v))) {
-                    PyObject *tmp = v;
-                    v = PyNumber_Long(v);
-                    assert(PyLong_CheckExact(v));
-                    Py_DECREF(tmp);
-                    if (unlikely(!v)) return (unsigned short) -1;
-                }
-#if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                if (Py_SIZE(x) == 0)
-                    return (unsigned short) 0;
-                is_negative = Py_SIZE(x) < 0;
-#else
-                {
-                    int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                    if (unlikely(result < 0))
-                        return (unsigned short) -1;
-                    is_negative = result == 1;
-                }
-#endif
-                if (is_unsigned && unlikely(is_negative)) {
-                    goto raise_neg_overflow;
-                } else if (is_negative) {
-                    stepval = PyNumber_Invert(v);
-                    if (unlikely(!stepval))
-                        return (unsigned short) -1;
-                } else {
-                    stepval = __Pyx_NewRef(v);
-                }
-                val = (unsigned short) 0;
-                mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
-                shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
-                for (bits = 0; bits < (int) sizeof(unsigned short) * 8 - chunk_size; bits += chunk_size) {
-                    PyObject *tmp, *digit;
-                    digit = PyNumber_And(stepval, mask);
-                    if (unlikely(!digit)) goto done;
-                    idigit = PyLong_AsLong(digit);
-                    Py_DECREF(digit);
-                    if (unlikely(idigit < 0)) goto done;
-                    tmp = PyNumber_Rshift(stepval, shift);
-                    if (unlikely(!tmp)) goto done;
-                    Py_DECREF(stepval); stepval = tmp;
-                    val |= ((unsigned short) idigit) << bits;
-                    #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-                    if (Py_SIZE(stepval) == 0)
-                        goto unpacking_done;
-                    #endif
-                }
-                idigit = PyLong_AsLong(stepval);
-                if (unlikely(idigit < 0)) goto done;
-                remaining_bits = ((int) sizeof(unsigned short) * 8) - bits - (is_unsigned ? 0 : 1);
-                if (unlikely(idigit >= (1L << remaining_bits)))
-                    goto raise_overflow;
-                val |= ((unsigned short) idigit) << bits;
-            #if CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030B0000
-            unpacking_done:
-            #endif
-                if (!is_unsigned) {
-                    if (unlikely(val & (((unsigned short) 1) << (sizeof(unsigned short) * 8 - 1))))
-                        goto raise_overflow;
-                    if (is_negative)
-                        val = ~val;
-                }
-                ret = 0;
-            done:
-                Py_XDECREF(shift);
-                Py_XDECREF(mask);
-                Py_XDECREF(stepval);
-#endif
+            int result = PyObject_RichCompareBool(v, Py_False, Py_LT);
+            if (unlikely(result < 0)) {
                 Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
+                return (unsigned short) -1;
             }
-            return (unsigned short) -1;
+            is_negative = result == 1;
         }
-    } else {
-        unsigned short val;
-        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
-        if (!tmp) return (unsigned short) -1;
-        val = __Pyx_PyInt_As_unsigned_short(tmp);
-        Py_DECREF(tmp);
+        if (is_unsigned && unlikely(is_negative)) {
+            Py_DECREF(v);
+            goto raise_neg_overflow;
+        } else if (is_negative) {
+            stepval = PyNumber_Invert(v);
+            Py_DECREF(v);
+            if (unlikely(!stepval))
+                return (unsigned short) -1;
+        } else {
+            stepval = v;
+        }
+        v = NULL;
+        val = (unsigned short) 0;
+        mask = PyLong_FromLong((1L << chunk_size) - 1); if (unlikely(!mask)) goto done;
+        shift = PyLong_FromLong(chunk_size); if (unlikely(!shift)) goto done;
+        for (bits = 0; bits < (int) sizeof(unsigned short) * 8 - chunk_size; bits += chunk_size) {
+            PyObject *tmp, *digit;
+            long idigit;
+            digit = PyNumber_And(stepval, mask);
+            if (unlikely(!digit)) goto done;
+            idigit = PyLong_AsLong(digit);
+            Py_DECREF(digit);
+            if (unlikely(idigit < 0)) goto done;
+            val |= ((unsigned short) idigit) << bits;
+            tmp = PyNumber_Rshift(stepval, shift);
+            if (unlikely(!tmp)) goto done;
+            Py_DECREF(stepval); stepval = tmp;
+        }
+        Py_DECREF(shift); shift = NULL;
+        Py_DECREF(mask); mask = NULL;
+        {
+            long idigit = PyLong_AsLong(stepval);
+            if (unlikely(idigit < 0)) goto done;
+            remaining_bits = ((int) sizeof(unsigned short) * 8) - bits - (is_unsigned ? 0 : 1);
+            if (unlikely(idigit >= (1L << remaining_bits)))
+                goto raise_overflow;
+            val |= ((unsigned short) idigit) << bits;
+        }
+        if (!is_unsigned) {
+            if (unlikely(val & (((unsigned short) 1) << (sizeof(unsigned short) * 8 - 1))))
+                goto raise_overflow;
+            if (is_negative)
+                val = ~val;
+        }
+        ret = 0;
+    done:
+        Py_XDECREF(shift);
+        Py_XDECREF(mask);
+        Py_XDECREF(stepval);
+#endif
+        if (unlikely(ret))
+            return (unsigned short) -1;
         return val;
     }
 raise_overflow:
@@ -38310,12 +38348,19 @@ static CYTHON_INLINE PyObject* __Pyx_PyInt_From_unsigned_short(unsigned short va
         }
     }
     {
-        int one = 1; int little = (int)*(unsigned char *)&one;
         unsigned char *bytes = (unsigned char *)&value;
-#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX >= 0x030d00A4
+        if (is_unsigned) {
+            return PyLong_FromUnsignedNativeBytes(bytes, sizeof(value), -1);
+        } else {
+            return PyLong_FromNativeBytes(bytes, sizeof(value), -1);
+        }
+#elif !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+        int one = 1; int little = (int)*(unsigned char *)&one;
         return _PyLong_FromByteArray(bytes, sizeof(unsigned short),
                                      little, !is_unsigned);
 #else
+        int one = 1; int little = (int)*(unsigned char *)&one;
         PyObject *from_bytes, *result = NULL;
         PyObject *py_bytes = NULL, *arg_tuple = NULL, *kwds = NULL, *order_str = NULL;
         from_bytes = PyObject_GetAttrString((PyObject*)&PyLong_Type, "from_bytes");
@@ -38374,12 +38419,19 @@ static CYTHON_INLINE PyObject* __Pyx_PyInt_From_unsigned_int(unsigned int value)
         }
     }
     {
-        int one = 1; int little = (int)*(unsigned char *)&one;
         unsigned char *bytes = (unsigned char *)&value;
-#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX >= 0x030d00A4
+        if (is_unsigned) {
+            return PyLong_FromUnsignedNativeBytes(bytes, sizeof(value), -1);
+        } else {
+            return PyLong_FromNativeBytes(bytes, sizeof(value), -1);
+        }
+#elif !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+        int one = 1; int little = (int)*(unsigned char *)&one;
         return _PyLong_FromByteArray(bytes, sizeof(unsigned int),
                                      little, !is_unsigned);
 #else
+        int one = 1; int little = (int)*(unsigned char *)&one;
         PyObject *from_bytes, *result = NULL;
         PyObject *py_bytes = NULL, *arg_tuple = NULL, *kwds = NULL, *order_str = NULL;
         from_bytes = PyObject_GetAttrString((PyObject*)&PyLong_Type, "from_bytes");
@@ -38438,12 +38490,19 @@ static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
         }
     }
     {
-        int one = 1; int little = (int)*(unsigned char *)&one;
         unsigned char *bytes = (unsigned char *)&value;
-#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+#if !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX >= 0x030d00A4
+        if (is_unsigned) {
+            return PyLong_FromUnsignedNativeBytes(bytes, sizeof(value), -1);
+        } else {
+            return PyLong_FromNativeBytes(bytes, sizeof(value), -1);
+        }
+#elif !CYTHON_COMPILING_IN_LIMITED_API && PY_VERSION_HEX < 0x030d0000
+        int one = 1; int little = (int)*(unsigned char *)&one;
         return _PyLong_FromByteArray(bytes, sizeof(long),
                                      little, !is_unsigned);
 #else
+        int one = 1; int little = (int)*(unsigned char *)&one;
         PyObject *from_bytes, *result = NULL;
         PyObject *py_bytes = NULL, *arg_tuple = NULL, *kwds = NULL, *order_str = NULL;
         from_bytes = PyObject_GetAttrString((PyObject*)&PyLong_Type, "from_bytes");
diff --git a/python/dnet.pyx b/python/dnet.pyx
index 4e3604f..6aefaa2 100644
--- a/python/dnet.pyx
+++ b/python/dnet.pyx
@@ -25,7 +25,7 @@ cdef extern from "dnet.h":
 cdef extern from "Python.h":
     object  PyBytes_FromStringAndSize(char *s, int len)
     int     PyBytes_Size(object o)
-    int     PyObject_AsReadBuffer(object o, char **pp, int *lenp)
+    int     PyObject_AsReadBuffer(object o, const void **pp, ssize_t *lenp)
     int     PyLong_Check(object o)
     int     PyLong_Check(object o)
     long    PyLong_AsLong(object o)
@@ -294,8 +294,8 @@ def ip_checksum(pkt):
     """
     cdef char buf[2048]
     cdef char *p
-    cdef int n
-    if PyObject_AsReadBuffer(pkt, &p, &n) == 0:
+    cdef ssize_t n
+    if PyObject_AsReadBuffer(pkt, <const void **>&p, &n) == 0:
         if n < 2048:
             memcpy(buf, p, n)
             __ip_checksum(buf, n)
@@ -310,8 +310,8 @@ def ip_checksum(pkt):
 
 def ip_cksum_add(buf, int sum):
     cdef char *p
-    cdef int n
-    if PyObject_AsReadBuffer(buf, &p, &n) == 0:
+    cdef ssize_t n
+    if PyObject_AsReadBuffer(buf, <const void **>&p, &n) == 0:
         return __ip_cksum_add(p, n, sum)
     else:
         raise TypeError
@@ -661,7 +661,7 @@ cdef extern from *:
         addr_t arp_ha
     ctypedef struct arp_t:
         int __xxx
-    ctypedef int (*arp_handler)(arp_entry *entry, void *arg) except -1
+    ctypedef int (*arp_handler)(const arp_entry *entry, void *arg) except -1
     
     arp_t *arp_open()
     int    arp_add(arp_t *arp, arp_entry *entry)
@@ -687,7 +687,7 @@ ARP_OP_REPLY =		2	# /* response giving hardware address */
 ARP_OP_REVREQUEST =	3	# /* request to resolve pa given ha */
 ARP_OP_REVREPLY =	4	# /* response giving protocol address */
 
-cdef int __arp_callback(arp_entry *entry, void *arg) except -1:
+cdef int __arp_callback(const arp_entry *entry, void *arg) except -1:
     f, a = <object>arg
     pa, ha = addr(), addr()
     (<addr>pa)._addr = entry.arp_pa
@@ -911,7 +911,7 @@ cdef extern from *:
         addr_t		intf_alias_addrs[8]	# XXX
     ctypedef struct intf_t:
         int __xxx
-    ctypedef int (*intf_handler)(intf_entry *entry, void *arg) except -1
+    ctypedef int (*intf_handler)(const intf_entry *entry, void *arg) except -1
     
     intf_t *intf_open()
     int     intf_get(intf_t *intf, intf_entry *entry)
@@ -933,7 +933,7 @@ INTF_FLAG_NOARP =	0x08	# /* disable ARP */
 INTF_FLAG_BROADCAST =	0x10	# /* supports broadcast (r/o) */
 INTF_FLAG_MULTICAST =	0x20	# /* supports multicast (r/o) */
 
-cdef object ifent_to_dict(intf_entry *entry):
+cdef object ifent_to_dict(const intf_entry *entry):
     d = {}
     d['name'] = entry.intf_name
     d['type'] = entry.intf_type
@@ -970,7 +970,7 @@ cdef dict_to_ifent(object d, intf_entry *entry):
         for i from 0 <= i < entry.intf_alias_num:
             entry.intf_alias_addrs[i] = (<addr>d['alias_addrs'][i])._addr
 
-cdef int __intf_callback(intf_entry *entry, void *arg) except -1:
+cdef int __intf_callback(const intf_entry *entry, void *arg) except -1:
     f, a = <object>arg
     ret = f(ifent_to_dict(entry), a)
     if not ret:
@@ -1077,7 +1077,7 @@ cdef extern from *:
         addr_t route_gw
     ctypedef struct route_t:
         int __xxx
-    ctypedef int (*route_handler)(route_entry *entry, void *arg) except -1
+    ctypedef int (*route_handler)(const route_entry *entry, void *arg) except -1
     
     route_t *route_open()
     int      route_add(route_t *route, route_entry *entry)
@@ -1086,7 +1086,7 @@ cdef extern from *:
     int      route_loop(route_t *route, route_handler callback, void *arg)
     route_t *route_close(route_t *route)
 
-cdef int __route_callback(route_entry *entry, void *arg) except -1:
+cdef int __route_callback(const route_entry *entry, void *arg) except -1:
     f, a = <object>arg
     dst, gw = addr(), addr()
     (<addr>dst)._addr = entry.route_dst
@@ -1183,7 +1183,7 @@ cdef extern from *:
     
     ctypedef struct fw_t:
         int __xxx
-    ctypedef int (*fw_handler)(fw_rule *rule, void *arg) except -1
+    ctypedef int (*fw_handler)(const fw_rule *rule, void *arg) except -1
 
     fw_t *fw_open()
     int	  fw_add(fw_t *f, fw_rule *rule)
@@ -1197,7 +1197,7 @@ FW_OP_BLOCK =	2
 FW_DIR_IN =	1
 FW_DIR_OUT =	2
 
-cdef object rule_to_dict(fw_rule *rule):
+cdef object rule_to_dict(const fw_rule *rule):
     d = {}
     d['device'] = rule.fw_device
     d['op'] = rule.fw_op
@@ -1235,7 +1235,7 @@ cdef dict_to_rule(object d, fw_rule *rule):
         rule.fw_dport[0] = d['dport'][0]
         rule.fw_dport[1] = d['dport'][1]
 
-cdef int __fw_callback(fw_rule *rule, void *arg) except -1:
+cdef int __fw_callback(const fw_rule *rule, void *arg) except -1:
     f, a = <object>arg
     ret = f(rule_to_dict(rule), a)
     if not ret:
diff --git a/src/route-linux.c b/src/route-linux.c
index 45b5c2e..4275a30 100644
--- a/src/route-linux.c
+++ b/src/route-linux.c
@@ -232,7 +232,7 @@ route_get(route_t *r, struct route_entry *entry)
 	memset(buf, 0, sizeof(buf));
 
 	nmsg = (struct nlmsghdr *)buf;
-	nmsg->nlmsg_len = NLMSG_LENGTH(sizeof(*nmsg)) + RTA_LENGTH(alen);
+	nmsg->nlmsg_len = NLMSG_LENGTH(sizeof(*rmsg) + RTA_LENGTH(alen));
 	nmsg->nlmsg_flags = NLM_F_REQUEST;
 	nmsg->nlmsg_type = RTM_GETROUTE;
 	nmsg->nlmsg_seq = ++seq;