Extend type_dispatch namespace with TypeMapTwoResultsEntry and DefaultTwoResultsEntry

Author: antonwolfy

dpnp/backend/extensions/elementwise_functions/type_dispatch_building.hpp

@@ -0,0 +1,61 @@
+//*****************************************************************************
+// Copyright (c) 2025, Intel Corporation
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// maxification, are permitted provided that the following conditions are met:
+// - Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+// - Redistributions in binary form must reproduce the above copyright notice,
+//   this list of conditions and the following disclaimer in the documentation
+//   and/or other materials provided with the distribution.
+// - Neither the name of the copyright holder nor the names of its contributors
+//   may be used to endorse or promote products derived from this software
+//   without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+// THE POSSIBILITY OF SUCH DAMAGE.
+//*****************************************************************************
+
+#pragma once
+
+#include <type_traits>
+
+#include "utils/type_dispatch.hpp"
+
+namespace dpnp::extensions::py_internal::type_dispatch
+{
+/**
+ * Extends dpctl::tensor::type_dispatch::TypeMapResultEntry helper structure
+ * with support of the two result types.
+ */
+template <typename Ty,
+          typename ArgTy,
+          typename ResTy1 = ArgTy,
+          typename ResTy2 = ArgTy>
+struct TypeMapTwoResultsEntry : std::bool_constant<std::is_same_v<Ty, ArgTy>>
+{
+    using result_type1 = ResTy1;
+    using result_type2 = ResTy2;
+};
+
+/**
+ * Extends dpctl::tensor::type_dispatch::DefaultResultEntry helper structure
+ * with support of the two result types.
+ */
+template <typename Ty = void>
+struct DefaultTwoResultsEntry : std::true_type
+{
+    using result_type1 = Ty;
+    using result_type2 = Ty;
+};
+} // namespace dpnp::extensions::py_internal::type_dispatch