From db33d47877ba78570cd012fd7264c96c277b1b87 Mon Sep 17 00:00:00 2001
From: Aman Singh <amansingh080704@gmail.com>
Date: Thu, 18 Dec 2025 19:58:26 +0530
Subject: [PATCH 1/6] feat: add blas/ext/base/ndarray/dapx

---
 .../blas/ext/base/ndarray/dapx/README.md      | 130 ++++++++++++++++
 .../base/ndarray/dapx/benchmark/benchmark.js  | 101 ++++++++++++
 .../blas/ext/base/ndarray/dapx/docs/repl.txt  |  29 ++++
 .../base/ndarray/dapx/docs/types/index.d.ts   |  49 ++++++
 .../ext/base/ndarray/dapx/docs/types/test.ts  |  62 ++++++++
 .../ext/base/ndarray/dapx/examples/index.js   |  34 ++++
 .../blas/ext/base/ndarray/dapx/lib/index.js   |  47 ++++++
 .../blas/ext/base/ndarray/dapx/lib/main.js    |  72 +++++++++
 .../blas/ext/base/ndarray/dapx/package.json   |  76 +++++++++
 .../blas/ext/base/ndarray/dapx/test/test.js   | 145 ++++++++++++++++++
 10 files changed, 745 insertions(+)
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/package.json
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js

diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
new file mode 100644
index 000000000000..0c12d760def5
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
@@ -0,0 +1,130 @@
+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2025 The Stdlib Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+-->
+
+# dapx
+
+> Add a scalar constant to each element in a double-precision floating-point ndarray.
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
+```
+
+#### dapx( x, alpha )
+
+Adds a scalar constant to each element in a double-precision floating-point ndarray.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+
+var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+
+dapx( x, 5.0 );
+
+var y = x.data;
+// returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+```
+
+The function has the following parameters:
+
+-   **x**: input ndarray.
+-   **alpha**: scalar constant.
+
+Note that indexing is relative to the first index. To introduce an offset, use [`ndarray`][@stdlib/ndarray/ctor] view creation.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+
+// Initial array:
+var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
+
+// Create an ndarray view:
+var x = new ndarray( 'float64', xbuf, [ 3 ], [ 1 ], 2, 'row-major' );
+
+dapx( x, 5.0 );
+
+var y = x.data;
+// returns <Float64Array>[ 1.0, 2.0, 8.0, 9.0, 10.0 ]
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+## Notes
+
+-   The function **mutates** the input ndarray.
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
+
+var xbuf = discreteUniform( 10, 0, 100, {
+    'dtype': 'float64'
+});
+var x = new ndarray( 'float64', xbuf, [ 10 ], [ 1 ], 0, 'row-major' );
+
+console.log( x.data );
+
+dapx( x, 5.0 );
+
+console.log( x.data );
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+</section>
+
+<!-- /.related -->
+
+<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="links">
+
+[@stdlib/ndarray/ctor]: https://github.com/stdlib-js/ndarray-ctor
+
+</section>
+
+<!-- /.links -->
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
new file mode 100644
index 000000000000..560186ffd56c
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
@@ -0,0 +1,101 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var pkg = require( './../package.json' ).name;
+var dapx = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var x;
+
+	x = new ndarray( 'float64', discreteUniform( len, -100, 100, {
+		'dtype': 'float64'
+	}), [ len ], [ 1 ], 0, 'row-major' );
+
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var z;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			z = dapx( x, 5.0 );
+			if ( isnanf( z.data[ i % len ] ) ) {
+				b.fail( 'should not return NaN' );
+			}
+		}
+		b.toc();
+		if ( isnanf( z.data[ i % len ] ) ) {
+			b.fail( 'should not return NaN' );
+		}
+		b.pass( 'benchmark finished' );
+		b.end();
+	}
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+	var len;
+	var min;
+	var max;
+	var f;
+	var i;
+
+	min = 1; // 10^min
+	max = 6; // 10^max
+
+	for ( i = min; i <= max; i++ ) {
+		len = pow( 10, i );
+		f = createBenchmark( len );
+		bench( pkg+':len='+len, f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
new file mode 100644
index 000000000000..068a19cc0b21
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
@@ -0,0 +1,29 @@
+{{alias}}( x, alpha )
+    Adds a scalar constant to each element in a double-precision floating-
+    point ndarray.
+
+    Parameters
+    ----------
+    x: float64ndarray
+        Input ndarray.
+
+    alpha: number
+        Scalar constant.
+
+    Returns
+    -------
+    out: float64ndarray
+        Input ndarray.
+
+    Examples
+    --------
+    > var xbuf = new {{alias:@stdlib/array/float64}}( [ 1.0, 2.0, 3.0, 4.0 ] );
+    > var x = {{alias:@stdlib/ndarray/ctor}}( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+    > {{alias}}( x, 5.0 )
+    <ndarray>
+    > x.data
+    <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+
+    See Also
+    --------
+
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
new file mode 100644
index 000000000000..1b2d43c35a91
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
@@ -0,0 +1,49 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+// TypeScript Version: 4.1
+
+/// <reference types="@stdlib/types"/>
+
+import { float64ndarray } from '@stdlib/types/ndarray';
+
+/**
+* Adds a scalar constant to each element in a double-precision floating-point ndarray.
+*
+* @param x - input ndarray
+* @param alpha - scalar constant
+* @returns input ndarray
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var ndarray = require( '@stdlib/ndarray/ctor' );
+*
+* var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+* var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+*
+* dapx( x, 5.0 );
+*
+* var y = x.data;
+* // returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+*/
+declare function dapx( x: float64ndarray, alpha: number ): float64ndarray;
+
+
+// EXPORTS //
+
+export = dapx;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
new file mode 100644
index 000000000000..2ccdf2db6110
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
@@ -0,0 +1,62 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import dapx = require( './index' );
+
+
+// TESTS //
+
+// The function returns an ndarray...
+{
+	const x: any = null;
+	dapx( x, 5.0 ); // $ExpectType float64ndarray
+}
+
+// The compiler throws an error if the function is provided a first argument which is not an ndarray...
+{
+	dapx( 123, 5.0 ); // $ExpectError
+	dapx( true, 5.0 ); // $ExpectError
+	dapx( false, 5.0 ); // $ExpectError
+	dapx( null, 5.0 ); // $ExpectError
+	dapx( undefined, 5.0 ); // $ExpectError
+	dapx( '5', 5.0 ); // $ExpectError
+	dapx( [ '1', '2' ], 5.0 ); // $ExpectError
+	dapx( {}, 5.0 ); // $ExpectError
+	dapx( ( x: number ): number => x, 5.0 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a second argument which is not a number...
+{
+	const x: any = null;
+	dapx( x, '5' ); // $ExpectError
+	dapx( x, true ); // $ExpectError
+	dapx( x, false ); // $ExpectError
+	dapx( x, null ); // $ExpectError
+	dapx( x, undefined ); // $ExpectError
+	dapx( x, [ '1' ] ); // $ExpectError
+	dapx( x, {} ); // $ExpectError
+	dapx( x, ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+	const x: any = null;
+	dapx(); // $ExpectError
+	dapx( x ); // $ExpectError
+	dapx( x, 5.0, 10 ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
new file mode 100644
index 000000000000..e20b135a6b1e
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
@@ -0,0 +1,34 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var dapx = require( './../lib' );
+
+var xbuf = discreteUniform( 10, 0, 100, {
+	'dtype': 'float64'
+});
+var x = new ndarray( 'float64', xbuf, [ 10 ], [ 1 ], 0, 'row-major' );
+
+console.log( x.data );
+
+dapx( x, 5.0 );
+
+console.log( x.data );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
new file mode 100644
index 000000000000..c5acac898bba
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
@@ -0,0 +1,47 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+/**
+* Add a scalar constant to each element in a double-precision floating-point ndarray.
+*
+* @module @stdlib/blas/ext/base/ndarray/dapx
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var ndarray = require( '@stdlib/ndarray/ctor' );
+* var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
+*
+* var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+* var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+*
+* dapx( x, 5.0 );
+*
+* var y = x.data;
+* // returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
new file mode 100644
index 000000000000..30369236655c
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
@@ -0,0 +1,72 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var numelDimension = require( '@stdlib/ndarray/base/numel-dimension' );
+var strided = require( '@stdlib/blas/ext/base/dapx' ).ndarray;
+var getStride = require( '@stdlib/ndarray/base/stride' );
+var getOffset = require( '@stdlib/ndarray/base/offset' );
+var getData = require( '@stdlib/ndarray/base/data-buffer' );
+
+
+// MAIN //
+
+/**
+* Adds a scalar constant to each element in a double-precision floating-point ndarray.
+*
+* @param {float64ndarray} x - input ndarray
+* @param {number} alpha - scalar constant
+* @returns {float64ndarray} input ndarray
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var ndarray = require( '@stdlib/ndarray/ctor' );
+*
+* var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+* var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+*
+* dapx( x, 5.0 );
+*
+* var y = x.data;
+* // returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+*/
+function ndapx( x, alpha ) {
+	var buf;
+	var sx;
+	var ox;
+	var N;
+
+	N = numelDimension( x, 0 );
+	if ( N <= 0 ) {
+		return x;
+	}
+	buf = getData( x );
+	sx = getStride( x, 0 );
+	ox = getOffset( x );
+
+	strided( N, alpha, buf, sx, ox );
+	return x;
+}
+
+
+// EXPORTS //
+
+module.exports = ndapx;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/package.json b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/package.json
new file mode 100644
index 000000000000..07bfcd990e93
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/package.json
@@ -0,0 +1,76 @@
+{
+  "name": "@stdlib/blas/ext/base/ndarray/dapx",
+  "version": "0.0.0",
+  "description": "Add a scalar constant to each element in a double-precision floating-point ndarray.",
+  "license": "Apache-2.0",
+  "author": {
+    "name": "The Stdlib Authors",
+    "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+  },
+  "contributors": [
+    {
+      "name": "The Stdlib Authors",
+      "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+    }
+  ],
+  "main": "./lib",
+  "directories": {
+    "benchmark": "./benchmark",
+    "doc": "./docs",
+    "example": "./examples",
+    "lib": "./lib",
+    "test": "./test"
+  },
+  "types": "./docs/types",
+  "scripts": {},
+  "homepage": "https://github.com/stdlib-js/stdlib",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/stdlib-js/stdlib.git"
+  },
+  "bugs": {
+    "url": "https://github.com/stdlib-js/stdlib/issues"
+  },
+  "dependencies": {},
+  "devDependencies": {},
+  "engines": {
+    "node": ">=0.10.0",
+    "npm": ">2.7.0"
+  },
+  "os": [
+    "aix",
+    "darwin",
+    "freebsd",
+    "linux",
+    "macos",
+    "openbsd",
+    "sunos",
+    "win32",
+    "windows"
+  ],
+  "keywords": [
+    "stdlib",
+    "stdmath",
+    "mathematics",
+    "math",
+    "blas",
+    "level 1",
+    "dapx",
+    "linear",
+    "algebra",
+    "subroutines",
+    "ndarray",
+    "vector",
+    "array",
+    "multidimensional",
+    "add",
+    "constant",
+    "plus",
+    "increment",
+    "augment",
+    "float64",
+    "double",
+    "float64array"
+  ],
+  "__stdlib__": {}
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
new file mode 100644
index 000000000000..ed1dd1626ede
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
@@ -0,0 +1,145 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var Float64Array = require( '@stdlib/array/float64' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var dapx = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof dapx, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function adds a scalar constant to each element in a double-precision floating-point ndarray', function test( t ) {
+	var expected;
+	var xbuf;
+	var x;
+
+	xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+
+	expected = new Float64Array( [ 6.0, 7.0, 8.0, 9.0 ] );
+
+	dapx( x, 5.0 );
+
+	t.deepEqual( x.data, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function returns the input ndarray', function test( t ) {
+	var xbuf;
+	var x;
+	var y;
+
+	xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+
+	y = dapx( x, 5.0 );
+
+	t.strictEqual( y, x, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports ndarrays with negative strides', function test( t ) {
+	var expected;
+	var xbuf;
+	var x;
+
+	xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 4 ], [ -1 ], 3, 'row-major' );
+
+	expected = new Float64Array( [ 6.0, 7.0, 8.0, 9.0 ] );
+
+	dapx( x, 5.0 );
+
+	t.deepEqual( x.data, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports ndarrays with an offset', function test( t ) {
+	var expected;
+	var xbuf;
+	var x;
+
+	xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 3 ], [ 1 ], 2, 'row-major' );
+
+	expected = new Float64Array( [ 1.0, 2.0, 8.0, 9.0, 10.0 ] );
+
+	dapx( x, 5.0 );
+
+	t.deepEqual( x.data, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports zero-length ndarrays', function test( t ) {
+	var expected;
+	var xbuf;
+	var x;
+
+	xbuf = new Float64Array( [] );
+	x = new ndarray( 'float64', xbuf, [ 0 ], [ 1 ], 0, 'row-major' );
+
+	expected = new Float64Array( [] );
+
+	dapx( x, 5.0 );
+
+	t.deepEqual( x.data, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports adding zero', function test( t ) {
+	var expected;
+	var xbuf;
+	var x;
+
+	xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+
+	expected = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+
+	dapx( x, 0.0 );
+
+	t.deepEqual( x.data, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports negative constants', function test( t ) {
+	var expected;
+	var xbuf;
+	var x;
+
+	xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+
+	expected = new Float64Array( [ -4.0, -3.0, -2.0, -1.0 ] );
+
+	dapx( x, -5.0 );
+
+	t.deepEqual( x.data, expected, 'returns expected value' );
+	t.end();
+});

From b4175e20fafa22c4ca934c9f677d28772d3d61f4 Mon Sep 17 00:00:00 2001
From: Aman Singh <amansingh080704@gmail.com>
Date: Thu, 18 Dec 2025 20:04:36 +0530
Subject: [PATCH 2/6] fix: rename function from ndapx to dapx for consistency

---
 .../@stdlib/blas/ext/base/ndarray/dapx/lib/main.js            | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
index 30369236655c..0ec2aec7cb9d 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
@@ -48,7 +48,7 @@ var getData = require( '@stdlib/ndarray/base/data-buffer' );
 * var y = x.data;
 * // returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
 */
-function ndapx( x, alpha ) {
+function dapx( x, alpha ) {
 	var buf;
 	var sx;
 	var ox;
@@ -69,4 +69,4 @@ function ndapx( x, alpha ) {
 
 // EXPORTS //
 
-module.exports = ndapx;
+module.exports = dapx;

From 25c54a96995112da1884ddc32ebac61bfa705d3e Mon Sep 17 00:00:00 2001
From: Aman Singh <amansingh080704@gmail.com>
Date: Fri, 19 Dec 2025 18:21:43 +0530
Subject: [PATCH 3/6] docs: update return annotations to use ndarray instance
 notation

---
 .../@stdlib/blas/ext/base/ndarray/dapx/README.md     | 12 ++++--------
 .../@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt |  4 +---
 .../blas/ext/base/ndarray/dapx/docs/types/index.d.ts |  6 ++----
 .../@stdlib/blas/ext/base/ndarray/dapx/lib/index.js  |  6 ++----
 4 files changed, 9 insertions(+), 19 deletions(-)

diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
index 0c12d760def5..8e3ebe52e833 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
@@ -41,10 +41,8 @@ var ndarray = require( '@stdlib/ndarray/ctor' );
 var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 
-dapx( x, 5.0 );
-
-var y = x.data;
-// returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+var out = dapx( x, 5.0 );
+// returns <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
 ```
 
 The function has the following parameters:
@@ -64,10 +62,8 @@ var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
 // Create an ndarray view:
 var x = new ndarray( 'float64', xbuf, [ 3 ], [ 1 ], 2, 'row-major' );
 
-dapx( x, 5.0 );
-
-var y = x.data;
-// returns <Float64Array>[ 1.0, 2.0, 8.0, 9.0, 10.0 ]
+var out = dapx( x, 5.0 );
+// returns <ndarray>[ 8.0, 9.0, 10.0 ]
 ```
 
 </section>
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
index 068a19cc0b21..ae2c39b7ad3e 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
@@ -20,9 +20,7 @@
     > var xbuf = new {{alias:@stdlib/array/float64}}( [ 1.0, 2.0, 3.0, 4.0 ] );
     > var x = {{alias:@stdlib/ndarray/ctor}}( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
     > {{alias}}( x, 5.0 )
-    <ndarray>
-    > x.data
-    <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+    <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
 
     See Also
     --------
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
index 1b2d43c35a91..750650badd16 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
@@ -36,10 +36,8 @@ import { float64ndarray } from '@stdlib/types/ndarray';
 * var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 * var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 *
-* dapx( x, 5.0 );
-*
-* var y = x.data;
-* // returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+* var out = dapx( x, 5.0 );
+* // returns <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
 */
 declare function dapx( x: float64ndarray, alpha: number ): float64ndarray;
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
index c5acac898bba..8bb4d737b9ff 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
@@ -31,10 +31,8 @@
 * var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 * var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 *
-* dapx( x, 5.0 );
-*
-* var y = x.data;
-* // returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+* var out = dapx( x, 5.0 );
+* // returns <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
 */
 
 // MODULES //

From 15d54c7f766fa5e9d415c0795fc43c90f452ddb9 Mon Sep 17 00:00:00 2001
From: Aman Singh <amansingh080704@gmail.com>
Date: Sat, 20 Dec 2025 10:35:49 +0530
Subject: [PATCH 4/6] fix: update dapx ndarray API following dcusum pattern

---
 .../blas/ext/base/ndarray/dapx/README.md      | 33 +++++++++---
 .../base/ndarray/dapx/benchmark/benchmark.js  | 13 +++--
 .../blas/ext/base/ndarray/dapx/docs/repl.txt  | 18 +++----
 .../base/ndarray/dapx/docs/types/index.d.ts   | 14 +++--
 .../ext/base/ndarray/dapx/docs/types/test.ts  | 53 +++++++++----------
 .../ext/base/ndarray/dapx/examples/index.js   |  7 ++-
 .../blas/ext/base/ndarray/dapx/lib/main.js    | 22 +++++---
 .../blas/ext/base/ndarray/dapx/test/test.js   | 48 ++++++++++++++---
 8 files changed, 140 insertions(+), 68 deletions(-)

diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
index 8e3ebe52e833..45011d9ab203 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
@@ -30,31 +30,39 @@ limitations under the License.
 var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
 ```
 
-#### dapx( x, alpha )
+#### dapx( arrays )
 
 Adds a scalar constant to each element in a double-precision floating-point ndarray.
 
 ```javascript
 var Float64Array = require( '@stdlib/array/float64' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 
 var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 
-var out = dapx( x, 5.0 );
-// returns <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
+var alpha = scalar2ndarray( 5.0, {
+    'dtype': 'float64'
+});
+
+var out = dapx( [ x, alpha ] );
+// returns <ndarray>
+
+var bool = ( out === x );
+// returns true
 ```
 
 The function has the following parameters:
 
--   **x**: input ndarray.
--   **alpha**: scalar constant.
+-   **arrays**: array-like object containing an input ndarray and a zero-dimensional ndarray containing the scalar constant.
 
 Note that indexing is relative to the first index. To introduce an offset, use [`ndarray`][@stdlib/ndarray/ctor] view creation.
 
 ```javascript
 var Float64Array = require( '@stdlib/array/float64' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 
 // Initial array:
 var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
@@ -62,8 +70,12 @@ var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
 // Create an ndarray view:
 var x = new ndarray( 'float64', xbuf, [ 3 ], [ 1 ], 2, 'row-major' );
 
-var out = dapx( x, 5.0 );
-// returns <ndarray>[ 8.0, 9.0, 10.0 ]
+var alpha = scalar2ndarray( 5.0, {
+    'dtype': 'float64'
+});
+
+var out = dapx( [ x, alpha ] );
+// returns <ndarray>
 ```
 
 </section>
@@ -89,6 +101,7 @@ var out = dapx( x, 5.0 );
 ```javascript
 var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
 
 var xbuf = discreteUniform( 10, 0, 100, {
@@ -98,7 +111,11 @@ var x = new ndarray( 'float64', xbuf, [ 10 ], [ 1 ], 0, 'row-major' );
 
 console.log( x.data );
 
-dapx( x, 5.0 );
+var alpha = scalar2ndarray( 5.0, {
+    'dtype': 'float64'
+});
+
+dapx( [ x, alpha ] );
 
 console.log( x.data );
 ```
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
index 560186ffd56c..c42df3ef7d05 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
@@ -25,6 +25,7 @@ var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 var pkg = require( './../package.json' ).name;
 var dapx = require( './../lib' );
 
@@ -39,11 +40,17 @@ var dapx = require( './../lib' );
 * @returns {Function} benchmark function
 */
 function createBenchmark( len ) {
+	var alpha;
+	var xbuf;
 	var x;
 
-	x = new ndarray( 'float64', discreteUniform( len, -100, 100, {
+	xbuf = discreteUniform( len, -100, 100, {
 		'dtype': 'float64'
-	}), [ len ], [ 1 ], 0, 'row-major' );
+	});
+	x = new ndarray( 'float64', xbuf, [ len ], [ 1 ], 0, 'row-major' );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float64'
+	});
 
 	return benchmark;
 
@@ -59,7 +66,7 @@ function createBenchmark( len ) {
 
 		b.tic();
 		for ( i = 0; i < b.iterations; i++ ) {
-			z = dapx( x, 5.0 );
+			z = dapx( [ x, alpha ] );
 			if ( isnanf( z.data[ i % len ] ) ) {
 				b.fail( 'should not return NaN' );
 			}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
index ae2c39b7ad3e..46c232b6f2ea 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
@@ -1,26 +1,26 @@
-{{alias}}( x, alpha )
+{{alias}}( arrays )
+
     Adds a scalar constant to each element in a double-precision floating-
     point ndarray.
 
     Parameters
     ----------
-    x: float64ndarray
-        Input ndarray.
-
-    alpha: number
-        Scalar constant.
+    arrays: ArrayLikeObject<ndarray>
+        Array-like object containing an input ndarray and a zero-dimensional
+        ndarray containing the scalar constant.
 
     Returns
     -------
-    out: float64ndarray
+    out: ndarray
         Input ndarray.
 
     Examples
     --------
     > var xbuf = new {{alias:@stdlib/array/float64}}( [ 1.0, 2.0, 3.0, 4.0 ] );
     > var x = {{alias:@stdlib/ndarray/ctor}}( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
-    > {{alias}}( x, 5.0 )
-    <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
+    > var alpha = {{alias:@stdlib/ndarray/from-scalar}}( 5.0, 'float64', 'row-major' );
+    > {{alias}}( [ x, alpha ] )
+    <ndarray>
 
     See Also
     --------
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
index 750650badd16..3a2693bbe459 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
@@ -25,21 +25,25 @@ import { float64ndarray } from '@stdlib/types/ndarray';
 /**
 * Adds a scalar constant to each element in a double-precision floating-point ndarray.
 *
-* @param x - input ndarray
-* @param alpha - scalar constant
+* @param arrays - array-like object containing an input ndarray and a zero-dimensional ndarray containing the scalar constant
 * @returns input ndarray
 *
 * @example
 * var Float64Array = require( '@stdlib/array/float64' );
 * var ndarray = require( '@stdlib/ndarray/ctor' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 *
 * var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 * var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 *
-* var out = dapx( x, 5.0 );
-* // returns <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
+* var alpha = scalar2ndarray( 5.0, {
+*     'dtype': 'float64'
+* });
+*
+* var out = dapx( [ x, alpha ] );
+* // returns <ndarray>
 */
-declare function dapx( x: float64ndarray, alpha: number ): float64ndarray;
+declare function dapx( arrays: ArrayLike<float64ndarray> ): float64ndarray;
 
 
 // EXPORTS //
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
index 2ccdf2db6110..635361218eb9 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
@@ -16,6 +16,7 @@
 * limitations under the License.
 */
 
+import zeros = require( '@stdlib/ndarray/zeros' );
 import dapx = require( './index' );
 
 
@@ -23,40 +24,38 @@ import dapx = require( './index' );
 
 // The function returns an ndarray...
 {
-	const x: any = null;
-	dapx( x, 5.0 ); // $ExpectType float64ndarray
-}
+	const x = zeros( [ 10 ], {
+		'dtype': 'float64'
+	});
+	const alpha = zeros( [], {
+		'dtype': 'float64'
+	});
 
-// The compiler throws an error if the function is provided a first argument which is not an ndarray...
-{
-	dapx( 123, 5.0 ); // $ExpectError
-	dapx( true, 5.0 ); // $ExpectError
-	dapx( false, 5.0 ); // $ExpectError
-	dapx( null, 5.0 ); // $ExpectError
-	dapx( undefined, 5.0 ); // $ExpectError
-	dapx( '5', 5.0 ); // $ExpectError
-	dapx( [ '1', '2' ], 5.0 ); // $ExpectError
-	dapx( {}, 5.0 ); // $ExpectError
-	dapx( ( x: number ): number => x, 5.0 ); // $ExpectError
+	dapx( [ x, alpha ] ); // $ExpectType float64ndarray
 }
 
-// The compiler throws an error if the function is provided a second argument which is not a number...
+// The compiler throws an error if the function is provided a first argument which is not an array of ndarrays...
 {
-	const x: any = null;
-	dapx( x, '5' ); // $ExpectError
-	dapx( x, true ); // $ExpectError
-	dapx( x, false ); // $ExpectError
-	dapx( x, null ); // $ExpectError
-	dapx( x, undefined ); // $ExpectError
-	dapx( x, [ '1' ] ); // $ExpectError
-	dapx( x, {} ); // $ExpectError
-	dapx( x, ( x: number ): number => x ); // $ExpectError
+	dapx( '10' ); // $ExpectError
+	dapx( 10 ); // $ExpectError
+	dapx( true ); // $ExpectError
+	dapx( false ); // $ExpectError
+	dapx( null ); // $ExpectError
+	dapx( undefined ); // $ExpectError
+	dapx( [] ); // $ExpectError
+	dapx( {} ); // $ExpectError
+	dapx( ( x: number ): number => x ); // $ExpectError
 }
 
 // The compiler throws an error if the function is provided an unsupported number of arguments...
 {
-	const x: any = null;
+	const x = zeros( [ 10 ], {
+		'dtype': 'float64'
+	});
+	const alpha = zeros( [], {
+		'dtype': 'float64'
+	});
+
 	dapx(); // $ExpectError
-	dapx( x ); // $ExpectError
-	dapx( x, 5.0, 10 ); // $ExpectError
+	dapx( [ x, alpha ], {} ); // $ExpectError
 }
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
index e20b135a6b1e..6e2ee86498c8 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
@@ -20,6 +20,7 @@
 
 var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 var dapx = require( './../lib' );
 
 var xbuf = discreteUniform( 10, 0, 100, {
@@ -29,6 +30,10 @@ var x = new ndarray( 'float64', xbuf, [ 10 ], [ 1 ], 0, 'row-major' );
 
 console.log( x.data );
 
-dapx( x, 5.0 );
+var alpha = scalar2ndarray( 5.0, {
+	'dtype': 'float64'
+});
+
+dapx( [ x, alpha ] );
 
 console.log( x.data );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
index 0ec2aec7cb9d..3f9ab613f504 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
@@ -25,6 +25,7 @@ var strided = require( '@stdlib/blas/ext/base/dapx' ).ndarray;
 var getStride = require( '@stdlib/ndarray/base/stride' );
 var getOffset = require( '@stdlib/ndarray/base/offset' );
 var getData = require( '@stdlib/ndarray/base/data-buffer' );
+var ndarraylike2scalar = require( '@stdlib/ndarray/base/ndarraylike2scalar' );
 
 
 // MAIN //
@@ -32,27 +33,32 @@ var getData = require( '@stdlib/ndarray/base/data-buffer' );
 /**
 * Adds a scalar constant to each element in a double-precision floating-point ndarray.
 *
-* @param {float64ndarray} x - input ndarray
-* @param {number} alpha - scalar constant
-* @returns {float64ndarray} input ndarray
+* @param {ArrayLikeObject<Object>} arrays - array-like object containing an input ndarray and a zero-dimensional ndarray containing the scalar constant
+* @returns {Object} input ndarray
 *
 * @example
 * var Float64Array = require( '@stdlib/array/float64' );
 * var ndarray = require( '@stdlib/ndarray/ctor' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 *
 * var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 * var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 *
-* dapx( x, 5.0 );
+* var alpha = scalar2ndarray( 5.0, {
+*     'dtype': 'float64'
+* });
 *
-* var y = x.data;
-* // returns <Float64Array>[ 6.0, 7.0, 8.0, 9.0 ]
+* dapx( [ x, alpha ] );
+* // returns <ndarray>
 */
-function dapx( x, alpha ) {
+function dapx( arrays ) {
 	var buf;
 	var sx;
 	var ox;
 	var N;
+	var x;
+
+	x = arrays[ 0 ];
 
 	N = numelDimension( x, 0 );
 	if ( N <= 0 ) {
@@ -62,7 +68,7 @@ function dapx( x, alpha ) {
 	sx = getStride( x, 0 );
 	ox = getOffset( x );
 
-	strided( N, alpha, buf, sx, ox );
+	strided( N, ndarraylike2scalar( arrays[ 1 ] ), buf, sx, ox );
 	return x;
 }
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
index ed1dd1626ede..bf78e5c09950 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
@@ -23,6 +23,7 @@
 var tape = require( 'tape' );
 var Float64Array = require( '@stdlib/array/float64' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 var dapx = require( './../lib' );
 
 
@@ -36,6 +37,7 @@ tape( 'main export is a function', function test( t ) {
 
 tape( 'the function adds a scalar constant to each element in a double-precision floating-point ndarray', function test( t ) {
 	var expected;
+	var alpha;
 	var xbuf;
 	var x;
 
@@ -44,13 +46,16 @@ tape( 'the function adds a scalar constant to each element in a double-precision
 
 	expected = new Float64Array( [ 6.0, 7.0, 8.0, 9.0 ] );
 
-	dapx( x, 5.0 );
+	alpha = scalar2ndarray( 5.0, 'float64', 'row-major' );
+
+	dapx( [ x, alpha ] );
 
 	t.deepEqual( x.data, expected, 'returns expected value' );
 	t.end();
 });
 
 tape( 'the function returns the input ndarray', function test( t ) {
+	var alpha;
 	var xbuf;
 	var x;
 	var y;
@@ -58,7 +63,11 @@ tape( 'the function returns the input ndarray', function test( t ) {
 	xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 	x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 
-	y = dapx( x, 5.0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float64'
+	});
+
+	y = dapx( [ x, alpha ] );
 
 	t.strictEqual( y, x, 'returns expected value' );
 	t.end();
@@ -66,6 +75,7 @@ tape( 'the function returns the input ndarray', function test( t ) {
 
 tape( 'the function supports ndarrays with negative strides', function test( t ) {
 	var expected;
+	var alpha;
 	var xbuf;
 	var x;
 
@@ -74,7 +84,11 @@ tape( 'the function supports ndarrays with negative strides', function test( t )
 
 	expected = new Float64Array( [ 6.0, 7.0, 8.0, 9.0 ] );
 
-	dapx( x, 5.0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float64'
+	});
+
+	dapx( [ x, alpha ] );
 
 	t.deepEqual( x.data, expected, 'returns expected value' );
 	t.end();
@@ -82,6 +96,7 @@ tape( 'the function supports ndarrays with negative strides', function test( t )
 
 tape( 'the function supports ndarrays with an offset', function test( t ) {
 	var expected;
+	var alpha;
 	var xbuf;
 	var x;
 
@@ -90,7 +105,11 @@ tape( 'the function supports ndarrays with an offset', function test( t ) {
 
 	expected = new Float64Array( [ 1.0, 2.0, 8.0, 9.0, 10.0 ] );
 
-	dapx( x, 5.0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float64'
+	});
+
+	dapx( [ x, alpha ] );
 
 	t.deepEqual( x.data, expected, 'returns expected value' );
 	t.end();
@@ -98,6 +117,7 @@ tape( 'the function supports ndarrays with an offset', function test( t ) {
 
 tape( 'the function supports zero-length ndarrays', function test( t ) {
 	var expected;
+	var alpha;
 	var xbuf;
 	var x;
 
@@ -106,7 +126,11 @@ tape( 'the function supports zero-length ndarrays', function test( t ) {
 
 	expected = new Float64Array( [] );
 
-	dapx( x, 5.0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float64'
+	});
+
+	dapx( [ x, alpha ] );
 
 	t.deepEqual( x.data, expected, 'returns expected value' );
 	t.end();
@@ -114,6 +138,7 @@ tape( 'the function supports zero-length ndarrays', function test( t ) {
 
 tape( 'the function supports adding zero', function test( t ) {
 	var expected;
+	var alpha;
 	var xbuf;
 	var x;
 
@@ -122,7 +147,11 @@ tape( 'the function supports adding zero', function test( t ) {
 
 	expected = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 
-	dapx( x, 0.0 );
+	alpha = scalar2ndarray( 0.0, {
+		'dtype': 'float64'
+	});
+
+	dapx( [ x, alpha ] );
 
 	t.deepEqual( x.data, expected, 'returns expected value' );
 	t.end();
@@ -130,6 +159,7 @@ tape( 'the function supports adding zero', function test( t ) {
 
 tape( 'the function supports negative constants', function test( t ) {
 	var expected;
+	var alpha;
 	var xbuf;
 	var x;
 
@@ -138,7 +168,11 @@ tape( 'the function supports negative constants', function test( t ) {
 
 	expected = new Float64Array( [ -4.0, -3.0, -2.0, -1.0 ] );
 
-	dapx( x, -5.0 );
+	alpha = scalar2ndarray( -5.0, {
+		'dtype': 'float64'
+	});
+
+	dapx( [ x, alpha ] );
 
 	t.deepEqual( x.data, expected, 'returns expected value' );
 	t.end();

From 78c612ab56a4fcc768513ce93076f628a60baef0 Mon Sep 17 00:00:00 2001
From: Aman Singh <amansingh080704@gmail.com>
Date: Sat, 20 Dec 2025 10:43:17 +0530
Subject: [PATCH 5/6] fix CI errors

---
 .../@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt     | 2 +-
 .../@stdlib/blas/ext/base/ndarray/dapx/lib/index.js      | 9 +++++++--
 .../@stdlib/blas/ext/base/ndarray/dapx/test/test.js      | 4 +++-
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
index 46c232b6f2ea..ca1dfa374711 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
@@ -18,7 +18,7 @@
     --------
     > var xbuf = new {{alias:@stdlib/array/float64}}( [ 1.0, 2.0, 3.0, 4.0 ] );
     > var x = {{alias:@stdlib/ndarray/ctor}}( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
-    > var alpha = {{alias:@stdlib/ndarray/from-scalar}}( 5.0, 'float64', 'row-major' );
+    > var alpha = {{alias:@stdlib/ndarray/from-scalar}}( 5.0, { 'dtype': 'float64' } );
     > {{alias}}( [ x, alpha ] )
     <ndarray>
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
index 8bb4d737b9ff..0144666ea6e9 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
@@ -26,13 +26,18 @@
 * @example
 * var Float64Array = require( '@stdlib/array/float64' );
 * var ndarray = require( '@stdlib/ndarray/ctor' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 * var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
 *
 * var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
 * var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
 *
-* var out = dapx( x, 5.0 );
-* // returns <ndarray>[ 6.0, 7.0, 8.0, 9.0 ]
+* var alpha = scalar2ndarray( 5.0, {
+*     'dtype': 'float64'
+* });
+*
+* var out = dapx( [ x, alpha ] );
+* // returns <ndarray>
 */
 
 // MODULES //
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
index bf78e5c09950..5f7d8a036158 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/test/test.js
@@ -46,7 +46,9 @@ tape( 'the function adds a scalar constant to each element in a double-precision
 
 	expected = new Float64Array( [ 6.0, 7.0, 8.0, 9.0 ] );
 
-	alpha = scalar2ndarray( 5.0, 'float64', 'row-major' );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float64'
+	});
 
 	dapx( [ x, alpha ] );
 

From e9c2f875fecef1ccf34d42ed82c097125c558112 Mon Sep 17 00:00:00 2001
From: Aman Singh <amansingh080704@gmail.com>
Date: Sat, 20 Dec 2025 10:49:15 +0530
Subject: [PATCH 6/6] Fix JSDoc doctest: add variable assignment before returns
 comment

---
 .../blas/ext/base/ndarray/dapx/lib/main.js    | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
index 3f9ab613f504..e90e6e95fd3a 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
@@ -48,27 +48,16 @@ var ndarraylike2scalar = require( '@stdlib/ndarray/base/ndarraylike2scalar' );
 *     'dtype': 'float64'
 * });
 *
-* dapx( [ x, alpha ] );
+* var out = dapx( [ x, alpha ] );
 * // returns <ndarray>
 */
 function dapx( arrays ) {
-	var buf;
-	var sx;
-	var ox;
-	var N;
-	var x;
+	var x = arrays[ 0 ];
 
-	x = arrays[ 0 ];
-
-	N = numelDimension( x, 0 );
-	if ( N <= 0 ) {
+	if ( numelDimension( x, 0 ) <= 0 ) {
 		return x;
 	}
-	buf = getData( x );
-	sx = getStride( x, 0 );
-	ox = getOffset( x );
-
-	strided( N, ndarraylike2scalar( arrays[ 1 ] ), buf, sx, ox );
+	strided( numelDimension( x, 0 ), ndarraylike2scalar( arrays[ 1 ] ), getData( x ), getStride( x, 0 ), getOffset( x ) ); // eslint-disable-line max-len
 	return x;
 }