From a38509a637ceea8ebca5e8cc231aa5a7fcd25eba Mon Sep 17 00:00:00 2001
From: Karan Anand <anandkarancompsci@gmail.com>
Date: Wed, 30 Sep 2026 11:05:47 -0700
Subject: [PATCH] feat: add `blas/ext/base/ndarray/swapx`

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown_pkg_readmes
    status: passed
  - task: lint_markdown_docs
    status: na
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: passed
  - task: lint_repl_help
    status: passed
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: passed
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: passed
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: passed
  - task: lint_c_examples
    status: passed
  - task: lint_c_benchmarks
    status: passed
  - task: lint_c_tests_fixtures
    status: na
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    status: passed
  - task: lint_license_headers
    status: passed
---
---
 .../blas/ext/base/ndarray/swapx/README.md     | 299 ++++++++++++
 .../base/ndarray/swapx/benchmark/benchmark.js | 110 +++++
 .../swapx/benchmark/benchmark.native.js       | 115 +++++
 .../base/ndarray/swapx/benchmark/c/Makefile   | 146 ++++++
 .../swapx/benchmark/c/benchmark.length.c      | 210 ++++++++
 .../blas/ext/base/ndarray/swapx/binding.gyp   | 265 +++++++++++
 .../blas/ext/base/ndarray/swapx/docs/repl.txt |  33 ++
 .../base/ndarray/swapx/docs/types/index.d.ts  |  58 +++
 .../ext/base/ndarray/swapx/docs/types/test.ts |  70 +++
 .../base/ndarray/swapx/examples/c/Makefile    | 146 ++++++
 .../base/ndarray/swapx/examples/c/example.c   |  92 ++++
 .../ext/base/ndarray/swapx/examples/index.js  |  41 ++
 .../blas/ext/base/ndarray/swapx/include.gypi  |  53 +++
 .../stdlib/blas/ext/base/ndarray/swapx.h      |  40 ++
 .../blas/ext/base/ndarray/swapx/lib/index.js  |  63 +++
 .../blas/ext/base/ndarray/swapx/lib/main.js   |  79 +++
 .../blas/ext/base/ndarray/swapx/lib/native.js |  73 +++
 .../blas/ext/base/ndarray/swapx/manifest.json | 109 +++++
 .../blas/ext/base/ndarray/swapx/package.json  |  76 +++
 .../blas/ext/base/ndarray/swapx/src/Makefile  |  70 +++
 .../blas/ext/base/ndarray/swapx/src/addon.c   |  67 +++
 .../blas/ext/base/ndarray/swapx/src/main.c    |  53 +++
 .../blas/ext/base/ndarray/swapx/test/test.js  |  77 +++
 .../ext/base/ndarray/swapx/test/test.main.js  | 439 +++++++++++++++++
 .../base/ndarray/swapx/test/test.native.js    | 448 ++++++++++++++++++
 25 files changed, 3232 insertions(+)
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/README.md
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.native.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/Makefile
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/benchmark.length.c
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/binding.gyp
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/repl.txt
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/index.d.ts
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/test.ts
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/Makefile
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/example.c
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/index.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include.gypi
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include/stdlib/blas/ext/base/ndarray/swapx.h
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/index.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/main.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/native.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/manifest.json
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/package.json
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/Makefile
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/addon.c
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/main.c
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.main.js
 create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.native.js

diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/README.md
new file mode 100644
index 000000000000..e98c1b34f10a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/README.md
@@ -0,0 +1,299 @@
+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2026 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.
+
+-->
+
+# swapx
+
+> Add a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assign the results to elements in a one-dimensional single-precision floating-point output ndarray.
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var swapx = require( '@stdlib/blas/ext/base/ndarray/swapx' );
+```
+
+#### swapx( arrays )
+
+Adds a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assigns the results to elements in a one-dimensional single-precision floating-point output ndarray.
+
+```javascript
+var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+
+var x = new Float32Vector( [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ] );
+var w = new Float32Vector( 8 );
+
+var alpha = scalar2ndarray( 5.0, {
+    'dtype': 'float32'
+});
+
+swapx( [ x, w, alpha ] );
+// w => <ndarray>[ 3.0, 6.0, 8.0, 0.0, 9.0, 5.0, 4.0, 2.0 ]
+```
+
+The function has the following parameters:
+
+-   **arrays**: array-like object containing the following ndarrays:
+
+    -   a one-dimensional input ndarray.
+    -   a one-dimensional output ndarray.
+    -   a zero-dimensional ndarray containing the scalar constant to add.
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var discreteUniform = require( '@stdlib/random/discrete-uniform' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var ndarray2array = require( '@stdlib/ndarray/to-array' );
+var ndarraylike2scalar = require( '@stdlib/ndarray/ndarraylike2scalar' );
+var swapx = require( '@stdlib/blas/ext/base/ndarray/swapx' );
+
+var opts = {
+    'dtype': 'float32'
+};
+
+var x = discreteUniform( [ 10 ], -100, 100, opts );
+console.log( ndarray2array( x ) );
+
+var w = discreteUniform( [ 10 ], -100, 100, opts );
+console.log( ndarray2array( w ) );
+
+var alpha = scalar2ndarray( 5.0, opts );
+console.log( 'Alpha: %d', ndarraylike2scalar( alpha ) );
+
+swapx( [ x, w, alpha ] );
+console.log( ndarray2array( w ) );
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- C interface documentation. -->
+
+* * *
+
+<section class="c">
+
+## C APIs
+
+<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<!-- C usage documentation. -->
+
+<section class="usage">
+
+### Usage
+
+```c
+#include "stdlib/blas/ext/base/ndarray/swapx.h"
+```
+
+#### stdlib_blas_ext_swapx( arrays )
+
+Adds a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assigns the results to elements in a one-dimensional single-precision floating-point output ndarray.
+
+```c
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include <stdint.h>
+
+// Create ndarrays:
+const float dataX[] = { -2.0f, 1.0f, 3.0f, -5.0f };
+float dataW[] = { 0.0f, 0.0f, 0.0f, 0.0f };
+int64_t shape[] = { 4 };
+int64_t strides[] = { STDLIB_NDARRAY_FLOAT32_BYTES_PER_ELEMENT };
+int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+
+struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataX, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+struct ndarray *w = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataW, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+
+// Create an ndarray containing the scalar constant to add:
+const float adata[] = { 5.0f };
+int64_t astrides[] = { 0 };
+
+struct ndarray *alpha = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)adata, 0, NULL, astrides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+
+// Perform computation:
+const struct ndarray *arrays[] = { x, w, alpha };
+stdlib_blas_ext_swapx( arrays );
+
+// Free allocated memory:
+stdlib_ndarray_free( x );
+stdlib_ndarray_free( w );
+stdlib_ndarray_free( alpha );
+```
+
+The function accepts the following arguments:
+
+-   **arrays**: `[in] struct ndarray**` list containing the following ndarrays:
+
+    -   `[in] struct ndarray*` a one-dimensional input ndarray.
+    -   `[out] struct ndarray*` a one-dimensional output ndarray.
+    -   `[in] struct ndarray*` a zero-dimensional ndarray containing the scalar constant to add.
+
+```c
+void stdlib_blas_ext_swapx( const struct ndarray *arrays[] );
+```
+
+</section>
+
+<!-- /.usage -->
+
+<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<!-- C API usage examples. -->
+
+<section class="examples">
+
+### Examples
+
+```c
+#include "stdlib/blas/ext/base/ndarray/swapx.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int main( void ) {
+    // Create data buffers:
+    const float dataX[] = { -2.0f, 1.0f, 3.0f, -5.0f };
+    float dataW[] = { 0.0f, 0.0f, 0.0f, 0.0f };
+
+    // Specify the number of array dimensions:
+    const int64_t ndims = 1;
+
+    // Specify the array shape:
+    int64_t shape[] = { 4 };
+
+    // Specify the array strides:
+    int64_t strides[] = { STDLIB_NDARRAY_FLOAT32_BYTES_PER_ELEMENT };
+
+    // Specify the byte offset:
+    const int64_t offset = 0;
+
+    // Specify the array order:
+    const enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;
+
+    // Specify the index mode:
+    const enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;
+
+    // Specify the subscript index modes:
+    int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+    const int64_t nsubmodes = 1;
+
+    // Create ndarrays:
+    struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataX, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+    struct ndarray *w = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataW, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+
+    // Create a data buffer for an ndarray containing the scalar constant to add:
+    const float adata[] = { 5.0f };
+
+    // Specify the array strides for a zero-dimensional ndarray:
+    int64_t astrides[] = { 0 };
+
+    // Create an ndarray containing the scalar constant to add:
+    struct ndarray *alpha = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)adata, 0, NULL, astrides, 0, order, imode, nsubmodes, submodes );
+    if ( x == NULL || w == NULL || alpha == NULL ) {
+        fprintf( stderr, "Error allocating memory.\n" );
+        exit( 1 );
+    }
+
+    // Define a list of ndarrays:
+    const struct ndarray *arrays[] = { x, w, alpha };
+
+    // Perform computation:
+    stdlib_blas_ext_swapx( arrays );
+
+    // Print the result:
+    for ( int i = 0; i < 4; i++ ) {
+        printf( "w[ %i ] = %f\n", i, dataW[ i ] );
+    }
+
+    // Free allocated memory:
+    stdlib_ndarray_free( x );
+    stdlib_ndarray_free( w );
+    stdlib_ndarray_free( alpha );
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.c -->
+
+<!-- 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">
+
+</section>
+
+<!-- /.links -->
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.js
new file mode 100644
index 000000000000..92b7c1d094e6
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.js
@@ -0,0 +1,110 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 uniform = require( '@stdlib/random/uniform' );
+var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var swapx = require( './../lib/main.js' );
+
+
+// VARIABLES //
+
+var options = {
+	'dtype': 'float32'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - ndarray length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var alpha;
+	var x;
+	var w;
+
+	x = uniform( [ len ], -100.0, 100.0, options );
+	w = new Float32Vector( len );
+	alpha = scalar2ndarray( 5.0, options );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var out;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = swapx( [ x, w, alpha ] );
+			if ( typeof out !== 'object' ) {
+				b.fail( 'should return an ndarray' );
+			}
+		}
+		b.toc();
+		if ( typeof out !== 'object' ) {
+			b.fail( 'should return an ndarray' );
+		}
+		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( format( '%s:len=%d', pkg, len ), f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.native.js
new file mode 100644
index 000000000000..f36002eb87f6
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/benchmark.native.js
@@ -0,0 +1,115 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/uniform' );
+var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var swapx = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+	'skip': ( swapx instanceof Error )
+};
+var options = {
+	'dtype': 'float32'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - ndarray length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var alpha;
+	var x;
+	var w;
+
+	x = uniform( [ len ], -100.0, 100.0, options );
+	w = new Float32Vector( len );
+	alpha = scalar2ndarray( 5.0, options );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var out;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = swapx( [ x, w, alpha ] );
+			if ( typeof out !== 'object' ) {
+				b.fail( 'should return an ndarray' );
+			}
+		}
+		b.toc();
+		if ( typeof out !== 'object' ) {
+			b.fail( 'should return an ndarray' );
+		}
+		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( format( '%s::native:len=%d', pkg, len ), opts, f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/Makefile
new file mode 100644
index 000000000000..0756dc7da20a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 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.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+	QUIET := @
+else
+	QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+	OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+	CC := $(C_COMPILER)
+else
+	CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+	-std=c99 \
+	-O3 \
+	-Wall \
+	-pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+	fPIC ?=
+else
+	fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := benchmark.length.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+	$(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled benchmarks.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+	$(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+	$(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/benchmark.length.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/benchmark.length.c
new file mode 100644
index 000000000000..eb2b9586884f
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/benchmark/c/benchmark.length.c
@@ -0,0 +1,210 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/swapx.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <time.h>
+#include <sys/time.h>
+
+#define NAME "swapx"
+#define ITERATIONS 1000000
+#define REPEATS 3
+#define MIN 1
+#define MAX 6
+
+/**
+* Prints the TAP version.
+*/
+static void print_version( void ) {
+	printf( "TAP version 13\n" );
+}
+
+/**
+* Prints the TAP summary.
+*
+* @param total     total number of tests
+* @param passing   total number of passing tests
+*/
+static void print_summary( int total, int passing ) {
+	printf( "#\n" );
+	printf( "1..%d\n", total ); // TAP plan
+	printf( "# total %d\n", total );
+	printf( "# pass  %d\n", passing );
+	printf( "#\n" );
+	printf( "# ok\n" );
+}
+
+/**
+* Prints benchmarks results.
+*
+* @param iterations  number of iterations
+* @param elapsed     elapsed time in seconds
+*/
+static void print_results( int iterations, double elapsed ) {
+	double rate = (double)iterations / elapsed;
+	printf( "  ---\n" );
+	printf( "  iterations: %d\n", iterations );
+	printf( "  elapsed: %0.9f\n", elapsed );
+	printf( "  rate: %0.9f\n", rate );
+	printf( "  ...\n" );
+}
+
+/**
+* Returns a clock time.
+*
+* @return clock time
+*/
+static double tic( void ) {
+	struct timeval now;
+	gettimeofday( &now, NULL );
+	return (double)now.tv_sec + (double)now.tv_usec/1.0e6;
+}
+
+/**
+* Generates a random number on the interval [min,max).
+*
+* @param min    minimum value (inclusive)
+* @param max    maximum value (exclusive)
+* @return random number
+*/
+static float random_uniform( const float min, const float max ) {
+	float v = (float)rand() / ( (float)RAND_MAX + 1.0f );
+	return min + ( v*(max-min) );
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations   number of iterations
+* @param len          array length
+* @return             elapsed time in seconds
+*/
+static double benchmark( int iterations, int len ) {
+	enum STDLIB_NDARRAY_INDEX_MODE imode;
+	const struct ndarray *arrays[ 3 ];
+	enum STDLIB_NDARRAY_ORDER order;
+	int64_t astrides[ 1 ];
+	struct ndarray *alpha;
+	int8_t submodes[ 1 ];
+	int64_t strides[ 1 ];
+	int64_t shape[ 1 ];
+	int64_t nsubmodes;
+	struct ndarray *x;
+	struct ndarray *w;
+	float adata[ 1 ];
+	int64_t offset;
+	double elapsed;
+	int64_t ndims;
+	float *dataX;
+	float *dataW;
+	double t;
+	int i;
+
+	ndims = 1;
+	shape[ 0 ] = len;
+	strides[ 0 ] = STDLIB_NDARRAY_FLOAT32_BYTES_PER_ELEMENT;
+	offset = 0;
+	order = STDLIB_NDARRAY_ROW_MAJOR;
+	imode = STDLIB_NDARRAY_INDEX_ERROR;
+	submodes[ 0 ] = imode;
+	nsubmodes = 1;
+
+	dataX = (float *)malloc( len * sizeof( float ) );
+	dataW = (float *)malloc( len * sizeof( float ) );
+	for ( i = 0; i < len; i++ ) {
+		dataX[ i ] = random_uniform( -100.0f, 100.0f );
+		dataW[ i ] = 0.0f;
+	}
+
+	// cppcheck-suppress invalidPointerCast
+	x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataX, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+
+	// cppcheck-suppress invalidPointerCast
+	w = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataW, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+
+	adata[ 0 ] = 5.0f;
+	astrides[ 0 ] = 0;
+
+	// cppcheck-suppress invalidPointerCast
+	alpha = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)adata, 0, NULL, astrides, 0, order, imode, nsubmodes, submodes );
+
+	arrays[ 0 ] = x;
+	arrays[ 1 ] = w;
+	arrays[ 2 ] = alpha;
+
+	t = tic();
+	for ( i = 0; i < iterations; i++ ) {
+		stdlib_blas_ext_swapx( arrays );
+		if ( dataW[ 0 ] != dataW[ 0 ] ) {
+			printf( "should not return NaN\n" );
+			break;
+		}
+	}
+	elapsed = tic() - t;
+	if ( dataW[ 0 ] != dataW[ 0 ] ) {
+		printf( "should not return NaN\n" );
+	}
+	stdlib_ndarray_free( x );
+	stdlib_ndarray_free( w );
+	stdlib_ndarray_free( alpha );
+	free( dataX );
+	free( dataW );
+	arrays[ 0 ] = NULL;
+	arrays[ 1 ] = NULL;
+	arrays[ 2 ] = NULL;
+
+	return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+	double elapsed;
+	int count;
+	int iter;
+	int len;
+	int i;
+	int j;
+
+	// Use the current time to seed the random number generator:
+	srand( time( NULL ) );
+
+	print_version();
+	count = 0;
+	for ( i = MIN; i <= MAX; i++ ) {
+		len = pow( 10, i );
+		iter = ITERATIONS / pow( 10, i-1 );
+		for ( j = 0; j < REPEATS; j++ ) {
+			count += 1;
+			printf( "# c::%s:len=%d\n", NAME, len );
+			elapsed = benchmark( iter, len );
+			print_results( iter, elapsed );
+			printf( "ok %d benchmark finished\n", count );
+		}
+	}
+	print_summary( count, count );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/binding.gyp b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/binding.gyp
new file mode 100644
index 000000000000..60dce9d0b31a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/binding.gyp
@@ -0,0 +1,265 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2026 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.
+
+# A `.gyp` file for building a Node.js native add-on.
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+  # List of files to include in this file:
+  'includes': [
+    './include.gypi',
+  ],
+
+  # Define variables to be used throughout the configuration for all targets:
+  'variables': {
+    # Target name should match the add-on export name:
+    'addon_target_name%': 'addon',
+
+    # Fortran compiler (to override -Dfortran_compiler=<compiler>):
+    'fortran_compiler%': 'gfortran',
+
+    # Fortran compiler flags:
+    'fflags': [
+      # Specify the Fortran standard to which a program is expected to conform:
+      '-std=f95',
+
+      # Indicate that the layout is free-form source code:
+      '-ffree-form',
+
+      # Aggressive optimization:
+      '-O3',
+
+      # Enable commonly used warning options:
+      '-Wall',
+
+      # Warn if source code contains problematic language features:
+      '-Wextra',
+
+      # Warn if a procedure is called without an explicit interface:
+      '-Wimplicit-interface',
+
+      # Do not transform names of entities specified in Fortran source files by appending underscores (i.e., don't mangle names, thus allowing easier usage in C wrappers):
+      '-fno-underscoring',
+
+      # Warn if source code contains Fortran 95 extensions and C-language constructs:
+      '-pedantic',
+
+      # Compile but do not link (output is an object file):
+      '-c',
+    ],
+
+    # Set variables based on the host OS:
+    'conditions': [
+      [
+        'OS=="win"',
+        {
+          # Define the object file suffix:
+          'obj': 'obj',
+        },
+        {
+          # Define the object file suffix:
+          'obj': 'o',
+        }
+      ], # end condition (OS=="win")
+    ], # end conditions
+  }, # end variables
+
+  # Define compile targets:
+  'targets': [
+
+    # Target to generate an add-on:
+    {
+      # The target name should match the add-on export name:
+      'target_name': '<(addon_target_name)',
+
+      # Define dependencies:
+      'dependencies': [],
+
+      # Define directories which contain relevant include headers:
+      'include_dirs': [
+        # Local include directory:
+        '<@(include_dirs)',
+      ],
+
+      # List of source files:
+      'sources': [
+        '<@(src_files)',
+      ],
+
+      # Settings which should be applied when a target's object files are used as linker input:
+      'link_settings': {
+        # Define libraries:
+        'libraries': [
+          '<@(libraries)',
+        ],
+
+        # Define library directories:
+        'library_dirs': [
+          '<@(library_dirs)',
+        ],
+      },
+
+      # C/C++ compiler flags:
+      'cflags': [
+        # Enable commonly used warning options:
+        '-Wall',
+
+        # Aggressive optimization:
+        '-O3',
+      ],
+
+      # C specific compiler flags:
+      'cflags_c': [
+        # Specify the C standard to which a program is expected to conform:
+        '-std=c99',
+      ],
+
+      # C++ specific compiler flags:
+      'cflags_cpp': [
+        # Specify the C++ standard to which a program is expected to conform:
+        '-std=c++11',
+      ],
+
+      # Linker flags:
+      'ldflags': [],
+
+      # Apply conditions based on the host OS:
+      'conditions': [
+        [
+          'OS=="mac"',
+          {
+            # Linker flags:
+            'ldflags': [
+              '-undefined dynamic_lookup',
+              '-Wl,-no-pie',
+              '-Wl,-search_paths_first',
+            ],
+          },
+        ], # end condition (OS=="mac")
+        [
+          'OS!="win"',
+          {
+            # C/C++ flags:
+            'cflags': [
+              # Generate platform-independent code:
+              '-fPIC',
+            ],
+          },
+        ], # end condition (OS!="win")
+      ], # end conditions
+
+      # Define custom build actions for particular inputs:
+      'rules': [
+        {
+          # Define a rule for processing Fortran files:
+          'extension': 'f',
+
+          # Define the pathnames to be used as inputs when performing processing:
+          'inputs': [
+            # Full path of the current input:
+            '<(RULE_INPUT_PATH)'
+          ],
+
+          # Define the outputs produced during processing:
+          'outputs': [
+            # Store an output object file in a directory for placing intermediate results (only accessible within a single target):
+            '<(INTERMEDIATE_DIR)/<(RULE_INPUT_ROOT).<(obj)'
+          ],
+
+          # Define the rule for compiling Fortran based on the host OS:
+          'conditions': [
+            [
+              'OS=="win"',
+
+              # Rule to compile Fortran on Windows:
+              {
+                'rule_name': 'compile_fortran_windows',
+                'message': 'Compiling Fortran file <(RULE_INPUT_PATH) on Windows...',
+
+                'process_outputs_as_sources': 0,
+
+                # Define the command-line invocation:
+                'action': [
+                  '<(fortran_compiler)',
+                  '<@(fflags)',
+                  '<@(_inputs)',
+                  '-o',
+                  '<@(_outputs)',
+                ],
+              },
+
+              # Rule to compile Fortran on non-Windows:
+              {
+                'rule_name': 'compile_fortran_linux',
+                'message': 'Compiling Fortran file <(RULE_INPUT_PATH) on Linux...',
+
+                'process_outputs_as_sources': 1,
+
+                # Define the command-line invocation:
+                'action': [
+                  '<(fortran_compiler)',
+                  '<@(fflags)',
+                  '-fPIC', # generate platform-independent code
+                  '<@(_inputs)',
+                  '-o',
+                  '<@(_outputs)',
+                ],
+              }
+            ], # end condition (OS=="win")
+          ], # end conditions
+        }, # end rule (extension=="f")
+      ], # end rules
+    }, # end target <(addon_target_name)
+
+    # Target to copy a generated add-on to a standard location:
+    {
+      'target_name': 'copy_addon',
+
+      # Declare that the output of this target is not linked:
+      'type': 'none',
+
+      # Define dependencies:
+      'dependencies': [
+        # Require that the add-on be generated before building this target:
+        '<(addon_target_name)',
+      ],
+
+      # Define a list of actions:
+      'actions': [
+        {
+          'action_name': 'copy_addon',
+          'message': 'Copying addon...',
+
+          # Explicitly list the inputs in the command-line invocation below:
+          'inputs': [],
+
+          # Declare the expected outputs:
+          'outputs': [
+            '<(addon_output_dir)/<(addon_target_name).node',
+          ],
+
+          # Define the command-line invocation:
+          'action': [
+            'cp',
+            '<(PRODUCT_DIR)/<(addon_target_name).node',
+            '<(addon_output_dir)/<(addon_target_name).node',
+          ],
+        },
+      ], # end actions
+    }, # end target copy_addon
+  ], # end targets
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/repl.txt
new file mode 100644
index 000000000000..fc8fbe89d3f0
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/repl.txt
@@ -0,0 +1,33 @@
+
+{{alias}}( arrays )
+    Adds a scalar constant to each element in an input one-dimensional single-
+    precision floating-point ndarray and assigns the results to elements in a
+    one-dimensional single-precision floating-point output ndarray.
+
+    Parameters
+    ----------
+    arrays: ArrayLikeObject<ndarray>
+        Array-like object containing the following ndarrays:
+
+        - a one-dimensional input ndarray.
+        - a one-dimensional output ndarray.
+        - a zero-dimensional ndarray containing the scalar constant to add.
+
+    Returns
+    -------
+    out: ndarray
+        Output ndarray.
+
+    Examples
+    --------
+    > var xbuf = [ -2.0, 1.0, 3.0, -5.0 ];
+    > var x = new {{alias:@stdlib/ndarray/vector/float32}}( xbuf );
+    > var w = new {{alias:@stdlib/ndarray/vector/float32}}( 4 );
+    > var opts = { 'dtype': 'float32' };
+    > var alpha = {{alias:@stdlib/ndarray/from-scalar}}( 5.0, opts );
+    > {{alias}}( [ x, w, alpha ] )
+    <ndarray>[ 3.0, 6.0, 8.0, 0.0 ]
+
+    See Also
+    --------
+
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/index.d.ts
new file mode 100644
index 000000000000..808697f07338
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/index.d.ts
@@ -0,0 +1,58 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 { float32ndarray, typedndarray } from '@stdlib/types/ndarray';
+
+/**
+* Adds a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assigns the results to elements in a one-dimensional single-precision floating-point output ndarray.
+*
+* ## Notes
+*
+* -   The function expects the following ndarrays:
+*
+*     -   a one-dimensional input ndarray.
+*     -   a one-dimensional output ndarray.
+*     -   a zero-dimensional ndarray containing the scalar constant to add.
+*
+* @param arrays - array-like object containing ndarrays
+* @returns output ndarray
+*
+* @example
+* var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+*
+* var x = new Float32Vector( [ -2.0, 1.0, 3.0, -5.0 ] );
+* var w = new Float32Vector( [ 0.0, 0.0, 0.0, 0.0 ] );
+*
+* var alpha = scalar2ndarray( 5.0, {
+*     'dtype': 'float32'
+* });
+*
+* var out = swapx( [ x, w, alpha ] );
+* // returns <ndarray>[ 3.0, 6.0, 8.0, 0.0 ]
+*/
+declare function swapx( arrays: [ float32ndarray, float32ndarray, typedndarray<number> ] ): float32ndarray;
+
+
+// EXPORTS //
+
+export = swapx;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/test.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/test.ts
new file mode 100644
index 000000000000..ae311ca7a201
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/docs/types/test.ts
@@ -0,0 +1,70 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+/* eslint-disable space-in-parens */
+
+import zeros = require( '@stdlib/ndarray/zeros' );
+import scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+import swapx = require( './index' );
+
+
+// TESTS //
+
+// The function returns an ndarray...
+{
+	const x = zeros( [ 10 ], {
+		'dtype': 'float32'
+	});
+	const w = zeros( [ 10 ], {
+		'dtype': 'float32'
+	});
+	const alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	swapx( [ x, w, alpha ] ); // $ExpectType float32ndarray
+}
+
+// The compiler throws an error if the function is provided a first argument which is not an array of ndarrays...
+{
+	swapx( '10' ); // $ExpectError
+	swapx( 5 ); // $ExpectError
+	swapx( true ); // $ExpectError
+	swapx( false ); // $ExpectError
+	swapx( null ); // $ExpectError
+	swapx( undefined ); // $ExpectError
+	swapx( [] ); // $ExpectError
+	swapx( {} ); // $ExpectError
+	swapx( ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+	const x = zeros( [ 10 ], {
+		'dtype': 'float32'
+	});
+	const w = zeros( [ 10 ], {
+		'dtype': 'float32'
+	});
+	const alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	swapx(); // $ExpectError
+	swapx( [ x, w, alpha ], {} ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/Makefile
new file mode 100644
index 000000000000..c8f8e9a1517b
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 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.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+	QUIET := @
+else
+	QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+	OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+	CC := $(C_COMPILER)
+else
+	CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+	-std=c99 \
+	-O3 \
+	-Wall \
+	-pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+	fPIC ?=
+else
+	fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := example.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+	$(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled examples.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+	$(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+	$(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/example.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/example.c
new file mode 100644
index 000000000000..8bd55a02693b
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/c/example.c
@@ -0,0 +1,92 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/swapx.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int main( void ) {
+	// Create data buffers:
+	const float dataX[] = { -2.0f, 1.0f, 3.0f, -5.0f };
+	float dataW[] = { 0.0f, 0.0f, 0.0f, 0.0f };
+
+	// Specify the number of array dimensions:
+	const int64_t ndims = 1;
+
+	// Specify the array shape:
+	int64_t shape[] = { 4 };
+
+	// Specify the array strides:
+	int64_t strides[] = { STDLIB_NDARRAY_FLOAT32_BYTES_PER_ELEMENT };
+
+	// Specify the byte offset:
+	const int64_t offset = 0;
+
+	// Specify the array order:
+	const enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;
+
+	// Specify the index mode:
+	const enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;
+
+	// Specify the subscript index modes:
+	int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+	const int64_t nsubmodes = 1;
+
+	// Create ndarrays:
+	// cppcheck-suppress invalidPointerCast
+	struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataX, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+
+	// cppcheck-suppress invalidPointerCast
+	struct ndarray *w = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)dataW, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+
+	// Create a data buffer for an ndarray containing the scalar constant to add:
+	const float adata[] = { 5.0f };
+
+	// Specify the array strides for a zero-dimensional ndarray:
+	int64_t astrides[] = { 0 };
+
+	// Create an ndarray containing the scalar constant to add:
+	// cppcheck-suppress invalidPointerCast
+	struct ndarray *alpha = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)adata, 0, NULL, astrides, 0, order, imode, nsubmodes, submodes );
+	if ( x == NULL || w == NULL || alpha == NULL ) {
+		fprintf( stderr, "Error allocating memory.\n" );
+		exit( 1 );
+	}
+
+	// Define a list of ndarrays:
+	const struct ndarray *arrays[] = { x, w, alpha };
+
+	// Perform computation:
+	stdlib_blas_ext_swapx( arrays );
+
+	// Print the result:
+	for ( int i = 0; i < 4; i++ ) {
+		printf( "w[ %i ] = %f\n", i, dataW[ i ] );
+	}
+
+	// Free allocated memory:
+	stdlib_ndarray_free( x );
+	stdlib_ndarray_free( w );
+	stdlib_ndarray_free( alpha );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/index.js
new file mode 100644
index 000000000000..97b8f254b7be
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/examples/index.js
@@ -0,0 +1,41 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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/discrete-uniform' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var ndarray2array = require( '@stdlib/ndarray/to-array' );
+var ndarraylike2scalar = require( '@stdlib/ndarray/ndarraylike2scalar' );
+var swapx = require( './../lib' );
+
+var opts = {
+	'dtype': 'float32'
+};
+
+var x = discreteUniform( [ 10 ], -100, 100, opts );
+console.log( ndarray2array( x ) );
+
+var w = discreteUniform( [ 10 ], -100, 100, opts );
+console.log( ndarray2array( w ) );
+
+var alpha = scalar2ndarray( 5.0, opts );
+console.log( 'Alpha: %d', ndarraylike2scalar( alpha ) );
+
+swapx( [ x, w, alpha ] );
+console.log( ndarray2array( w ) );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include.gypi b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include.gypi
new file mode 100644
index 000000000000..bee8d41a2caf
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include.gypi
@@ -0,0 +1,53 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2026 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.
+
+# A GYP include file for building a Node.js native add-on.
+#
+# Main documentation:
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+  # Define variables to be used throughout the configuration for all targets:
+  'variables': {
+    # Source directory:
+    'src_dir': './src',
+
+    # Include directories:
+    'include_dirs': [
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).include; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+
+    # Add-on destination directory:
+    'addon_output_dir': './src',
+
+    # Source files:
+    'src_files': [
+      '<(src_dir)/addon.c',
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).src; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+
+    # Library dependencies:
+    'libraries': [
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).libraries; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+
+    # Library directories:
+    'library_dirs': [
+      '<!@(node -e "var arr = require(\'@stdlib/utils/library-manifest\')(\'./manifest.json\',{},{\'basedir\':process.cwd(),\'paths\':\'posix\'}).libpath; for ( var i = 0; i < arr.length; i++ ) { console.log( arr[ i ] ); }")',
+    ],
+  }, # end variables
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include/stdlib/blas/ext/base/ndarray/swapx.h b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include/stdlib/blas/ext/base/ndarray/swapx.h
new file mode 100644
index 000000000000..1e7258d5ddc5
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/include/stdlib/blas/ext/base/ndarray/swapx.h
@@ -0,0 +1,40 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+#ifndef STDLIB_BLAS_EXT_BASE_NDARRAY_SWAPX_H
+#define STDLIB_BLAS_EXT_BASE_NDARRAY_SWAPX_H
+
+#include "stdlib/ndarray/ctor.h"
+
+/*
+* If C++, prevent name mangling so that the compiler emits a binary file having undecorated names, thus mirroring the behavior of a C compiler.
+*/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+* Adds a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assigns the results to elements in a one-dimensional single-precision floating-point output ndarray.
+*/
+void stdlib_blas_ext_swapx( const struct ndarray *arrays[] );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // !STDLIB_BLAS_EXT_BASE_NDARRAY_SWAPX_H
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/index.js
new file mode 100644
index 000000000000..f147dd3e50a7
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/index.js
@@ -0,0 +1,63 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 an input one-dimensional single-precision floating-point ndarray and assign the results to elements in a one-dimensional single-precision floating-point output ndarray.
+*
+* @module @stdlib/blas/ext/base/ndarray/swapx
+*
+* @example
+* var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+* var swapx = require( '@stdlib/blas/ext/base/ndarray/swapx' );
+*
+* var x = new Float32Vector( [ -2.0, 1.0, 3.0, -5.0 ] );
+* var w = new Float32Vector( [ 0.0, 0.0, 0.0, 0.0 ] );
+*
+* var alpha = scalar2ndarray( 5.0, {
+*     'dtype': 'float32'
+* });
+*
+* var out = swapx( [ x, w, alpha ] );
+* // returns <ndarray>[ 3.0, 6.0, 8.0, 0.0 ]
+*/
+
+// MODULES //
+
+var join = require( 'path' ).join;
+var tryRequire = require( '@stdlib/utils/try-require' );
+var isError = require( '@stdlib/assert/is-error' );
+var main = require( './main.js' );
+
+
+// MAIN //
+
+var swapx;
+var tmp = tryRequire( join( __dirname, './native.js' ) );
+if ( isError( tmp ) ) {
+	swapx = main;
+} else {
+	swapx = tmp;
+}
+
+
+// EXPORTS //
+
+module.exports = swapx;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/main.js
new file mode 100644
index 000000000000..8ffe54c04451
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/main.js
@@ -0,0 +1,79 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 getStride = require( '@stdlib/ndarray/base/stride' );
+var getOffset = require( '@stdlib/ndarray/base/offset' );
+var getData = require( '@stdlib/ndarray/base/data-buffer' );
+var strided = require( '@stdlib/blas/ext/base/swapx' ).ndarray;
+var ndarraylike2scalar = require( '@stdlib/ndarray/base/ndarraylike2scalar' );
+
+
+// MAIN //
+
+/**
+* Adds a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assigns the results to elements in a one-dimensional single-precision floating-point output ndarray.
+*
+* ## Notes
+*
+* -   The function expects the following ndarrays:
+*
+*     -   a one-dimensional input ndarray.
+*     -   a one-dimensional output ndarray.
+*     -   a zero-dimensional ndarray containing the scalar constant to add.
+*
+* @param {ArrayLikeObject<Object>} arrays - array-like object containing ndarrays
+* @returns {ndarray} output ndarray
+*
+* @example
+* var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+*
+* var x = new Float32Vector( [ -2.0, 1.0, 3.0, -5.0 ] );
+* var w = new Float32Vector( [ 0.0, 0.0, 0.0, 0.0 ] );
+*
+* var alpha = scalar2ndarray( 5.0, {
+*     'dtype': 'float32'
+* });
+*
+* var out = swapx( [ x, w, alpha ] );
+* // returns <ndarray>[ 3.0, 6.0, 8.0, 0.0 ]
+*
+* var bool = ( out === w );
+* // returns true
+*/
+function swapx( arrays ) {
+	var alpha;
+	var x;
+	var w;
+
+	x = arrays[ 0 ];
+	w = arrays[ 1 ];
+	alpha = ndarraylike2scalar( arrays[ 2 ] );
+	strided( numelDimension( x, 0 ), alpha, getData( x ), getStride( x, 0 ), getOffset( x ), getData( w ), getStride( w, 0 ), getOffset( w ) ); // eslint-disable-line max-len
+	return w;
+}
+
+
+// EXPORTS //
+
+module.exports = swapx;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/native.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/native.js
new file mode 100644
index 000000000000..31fc3d1079fa
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/lib/native.js
@@ -0,0 +1,73 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 serialize = require( '@stdlib/ndarray/base/serialize-meta-data' );
+var getData = require( '@stdlib/ndarray/base/data-buffer' );
+var addon = require( './../src/addon.node' );
+
+
+// MAIN //
+
+/**
+* Adds a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assigns the results to elements in a one-dimensional single-precision floating-point output ndarray.
+*
+* ## Notes
+*
+* -   The function expects the following ndarrays:
+*
+*     -   a one-dimensional input ndarray.
+*     -   a one-dimensional output ndarray.
+*     -   a zero-dimensional ndarray containing the scalar constant to add.
+*
+* @private
+* @param {ArrayLikeObject<Object>} arrays - array-like object containing ndarrays
+* @returns {ndarray} output ndarray
+*
+* @example
+* var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+*
+* var x = new Float32Vector( [ -2.0, 1.0, 3.0, -5.0 ] );
+* var w = new Float32Vector( [ 0.0, 0.0, 0.0, 0.0 ] );
+*
+* var alpha = scalar2ndarray( 5.0, {
+*     'dtype': 'float32'
+* });
+*
+* var out = swapx( [ x, w, alpha ] );
+* // returns <ndarray>[ 3.0, 6.0, 8.0, 0.0 ]
+*
+* var bool = ( out === w );
+* // returns true
+*/
+function swapx( arrays ) {
+	var alpha = arrays[ 2 ];
+	var x = arrays[ 0 ];
+	var w = arrays[ 1 ];
+	addon( getData( x ), serialize( x ), getData( w ), serialize( w ), getData( alpha ), serialize( alpha ) ); // eslint-disable-line max-len
+	return w;
+}
+
+
+// EXPORTS //
+
+module.exports = swapx;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/manifest.json b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/manifest.json
new file mode 100644
index 000000000000..3e0fde06d44d
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/manifest.json
@@ -0,0 +1,109 @@
+{
+  "options": {
+    "task": "build",
+    "wasm": false
+  },
+  "fields": [
+    {
+      "field": "src",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "include",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "libraries",
+      "resolve": false,
+      "relative": false
+    },
+    {
+      "field": "libpath",
+      "resolve": true,
+      "relative": false
+    }
+  ],
+  "confs": [
+    {
+      "task": "build",
+      "wasm": false,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/blas/base/shared",
+        "@stdlib/blas/ext/base/swapx",
+        "@stdlib/ndarray/ctor",
+        "@stdlib/ndarray/base/napi/addon-arguments",
+        "@stdlib/napi/export",
+        "@stdlib/napi/argv"
+      ]
+    },
+    {
+      "task": "benchmark",
+      "wasm": false,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/blas/base/shared",
+        "@stdlib/blas/ext/base/swapx",
+        "@stdlib/ndarray/ctor",
+        "@stdlib/ndarray/dtypes",
+        "@stdlib/ndarray/index-modes",
+        "@stdlib/ndarray/orders",
+        "@stdlib/ndarray/base/bytes-per-element"
+      ]
+    },
+    {
+      "task": "examples",
+      "wasm": false,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/blas/base/shared",
+        "@stdlib/blas/ext/base/swapx",
+        "@stdlib/ndarray/ctor",
+        "@stdlib/ndarray/dtypes",
+        "@stdlib/ndarray/index-modes",
+        "@stdlib/ndarray/orders",
+        "@stdlib/ndarray/base/bytes-per-element"
+      ]
+    },
+    {
+      "task": "",
+      "wasm": true,
+      "src": [
+        "./src/main.c"
+      ],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": [
+        "@stdlib/blas/base/shared",
+        "@stdlib/blas/ext/base/swapx",
+        "@stdlib/ndarray/ctor"
+      ]
+    }
+  ]
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/package.json b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/package.json
new file mode 100644
index 000000000000..41d2e8fc3e39
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/package.json
@@ -0,0 +1,76 @@
+{
+  "name": "@stdlib/blas/ext/base/ndarray/swapx",
+  "version": "0.0.0",
+  "description": "Add a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assign the results to elements in a one-dimensional single-precision floating-point output 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",
+  "browser": "./lib/main.js",
+  "gypfile": true,
+  "directories": {
+    "benchmark": "./benchmark",
+    "doc": "./docs",
+    "example": "./examples",
+    "include": "./include",
+    "lib": "./lib",
+    "src": "./src",
+    "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",
+    "extended",
+    "ext",
+    "swapx",
+    "wapx",
+    "add",
+    "scalar",
+    "constant",
+    "strided",
+    "array",
+    "ndarray",
+    "float32",
+    "single",
+    "single-precision"
+  ],
+  "__stdlib__": {}
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/Makefile
new file mode 100644
index 000000000000..2caf905cedbe
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/Makefile
@@ -0,0 +1,70 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 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.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+	QUIET := @
+else
+	QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+	OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+	OS := WINNT
+endif
+endif
+endif
+endif
+
+
+# RULES #
+
+#/
+# Removes generated files for building an add-on.
+#
+# @example
+# make clean-addon
+#/
+clean-addon:
+	$(QUIET) -rm -f *.o *.node
+
+.PHONY: clean-addon
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean: clean-addon
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/addon.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/addon.c
new file mode 100644
index 000000000000..9825da39081c
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/addon.c
@@ -0,0 +1,67 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/swapx.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/base/napi/addon_arguments.h"
+#include "stdlib/napi/export.h"
+#include "stdlib/napi/argv.h"
+#include <node_api.h>
+#include <assert.h>
+
+/**
+* Receives JavaScript callback invocation data.
+*
+* @param env    environment under which the function is invoked
+* @param info   callback data
+* @return       Node-API value
+*/
+static napi_value addon( napi_env env, napi_callback_info info ) {
+	STDLIB_NAPI_ARGV( env, info, argv, argc, 6 );
+
+	// Process provided arguments:
+	struct ndarray *arrays[ 3 ];
+	napi_value err;
+	napi_status status = stdlib_ndarray_napi_addon_arguments( env, argv, 6, 3, arrays, &err );
+	assert( status == napi_ok );
+	if ( err != NULL ) {
+		status = napi_throw( env, err );
+		assert( status == napi_ok );
+		return NULL;
+	}
+	// Create a const-qualified view of the argument pointer list:
+	const struct ndarray *arr[ 3 ] = {
+		arrays[ 0 ],
+		arrays[ 1 ],
+		arrays[ 2 ]
+	};
+	// Perform computation:
+	stdlib_blas_ext_swapx( arr );
+
+	// Free allocated memory:
+	stdlib_ndarray_free( arrays[ 0 ] );
+	stdlib_ndarray_free( arrays[ 1 ] );
+	stdlib_ndarray_free( arrays[ 2 ] );
+	arrays[ 0 ] = NULL;
+	arrays[ 1 ] = NULL;
+	arrays[ 2 ] = NULL;
+
+	return NULL;
+}
+
+STDLIB_NAPI_MODULE_EXPORT_FCN( addon )
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/main.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/main.c
new file mode 100644
index 000000000000..19b4cf4497e8
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/src/main.c
@@ -0,0 +1,53 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/swapx.h"
+#include "stdlib/blas/ext/base/swapx.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/blas/base/shared.h"
+
+/**
+* Adds a scalar constant to each element in an input one-dimensional single-precision floating-point ndarray and assigns the results to elements in a one-dimensional single-precision floating-point output ndarray.
+*
+* ## Notes
+*
+* -   The function expects the following ndarrays:
+*
+*     -   a one-dimensional input ndarray.
+*     -   a one-dimensional output ndarray.
+*     -   a zero-dimensional ndarray containing the scalar constant to add.
+*
+* @param arrays    list containing ndarrays
+*/
+void stdlib_blas_ext_swapx( const struct ndarray *arrays[] ) {
+	const struct ndarray *x = arrays[ 0 ];
+	const struct ndarray *w = arrays[ 1 ];
+
+	float alpha;
+	stdlib_ndarray_get_float32( arrays[ 2 ], NULL, &alpha );
+
+	const CBLAS_INT N = stdlib_ndarray_dimension( x, 0 );
+	const CBLAS_INT strideX = stdlib_ndarray_stride_elements( x, 0 );
+	const CBLAS_INT offsetX = stdlib_ndarray_offset_elements( x );
+	const CBLAS_INT strideW = stdlib_ndarray_stride_elements( w, 0 );
+	const CBLAS_INT offsetW = stdlib_ndarray_offset_elements( w );
+
+	const float *dataX = (const float *)stdlib_ndarray_data( x );
+	float *dataW = (float *)stdlib_ndarray_data( w );
+	API_SUFFIX(stdlib_strided_swapx_ndarray)( N, alpha, dataX, strideX, offsetX, dataW, strideW, offsetW );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.js
new file mode 100644
index 000000000000..7822726a79bd
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.js
@@ -0,0 +1,77 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 proxyquire = require( 'proxyquire' );
+var IS_BROWSER = require( '@stdlib/assert/is-browser' );
+var swapx = require( './../lib' );
+
+
+// VARIABLES //
+
+var opts = {
+	'skip': IS_BROWSER
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof swapx, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'if a native implementation is available, the main export is the native implementation', opts, function test( t ) {
+	var swapx = proxyquire( './../lib', {
+		'@stdlib/utils/try-require': tryRequire
+	});
+
+	t.strictEqual( swapx, mock, 'returns expected value' );
+	t.end();
+
+	function tryRequire() {
+		return mock;
+	}
+
+	function mock() {
+		// Mock...
+	}
+});
+
+tape( 'if a native implementation is not available, the main export is a JavaScript implementation', opts, function test( t ) {
+	var swapx;
+	var main;
+
+	main = require( './../lib/main.js' );
+
+	swapx = proxyquire( './../lib', {
+		'@stdlib/utils/try-require': tryRequire
+	});
+
+	t.strictEqual( swapx, main, 'returns expected value' );
+	t.end();
+
+	function tryRequire() {
+		return new Error( 'Cannot find module' );
+	}
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.main.js
new file mode 100644
index 000000000000..16451a4e2e87
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.main.js
@@ -0,0 +1,439 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 Float32Array = require( '@stdlib/array/float32' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var ndarray = require( '@stdlib/ndarray/base/ctor' );
+var swapx = require( './../lib/main.js' );
+
+
+// FUNCTIONS //
+
+/**
+* Returns a one-dimensional ndarray.
+*
+* @private
+* @param {Float32Array} buffer - underlying data buffer
+* @param {NonNegativeInteger} length - number of indexed elements
+* @param {integer} stride - stride length
+* @param {NonNegativeInteger} offset - index offset
+* @returns {ndarray} one-dimensional ndarray
+*/
+function vector( buffer, length, stride, offset ) {
+	return new ndarray( 'float32', buffer, [ length ], [ stride ], offset, 'row-major' );
+}
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof swapx, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function has an arity of 1', function test( t ) {
+	t.strictEqual( swapx.length, 1, 'has expected arity' );
+	t.end();
+});
+
+tape( 'the function adds a scalar constant to each element and assigns results to an output ndarray', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0, // 3
+		4.0   // 4
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0, // 3
+		0.0  // 4
+	]);
+	x = vector( xbuf, 5, 1, 0 );
+	w = vector( wbuf, 5, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		3.0,  // 5.0 + -2.0
+		6.0,  // 5.0 + 1.0
+		8.0,  // 5.0 + 3.0
+		-1.0, // 5.0 + -6.0
+		9.0   // 5.0 + 4.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function copies the input ndarray to the output ndarray when alpha is zero', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0, // 3
+		4.0   // 4
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0, // 3
+		0.0  // 4
+	]);
+	x = vector( xbuf, 5, 1, 0 );
+	w = vector( wbuf, 5, 1, 0 );
+	alpha = scalar2ndarray( 0.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		-2.0,
+		1.0,
+		3.0,
+		-6.0,
+		4.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an input ndarray having a non-unit stride', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,
+		3.0,  // 1
+		-6.0,
+		4.0,  // 2
+		0.0,
+		-1.0, // 3
+		-3.0
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0  // 3
+	]);
+	x = vector( xbuf, 4, 2, 0 );
+	w = vector( wbuf, 4, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		3.0, // 5.0 + -2.0
+		8.0, // 5.0 + 3.0
+		9.0, // 5.0 + 4.0
+		4.0  // 5.0 + -1.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an input ndarray having a negative stride', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 4
+		1.0,  // 3
+		3.0,  // 2
+		-6.0, // 1
+		4.0   // 0
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0, // 3
+		0.0  // 4
+	]);
+	x = vector( xbuf, 5, -1, 4 );
+	w = vector( wbuf, 5, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		9.0,  // 5.0 + 4.0
+		-1.0, // 5.0 + -6.0
+		8.0,  // 5.0 + 3.0
+		6.0,  // 5.0 + 1.0
+		3.0   // 5.0 + -2.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an output ndarray having a non-unit stride', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0  // 3
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0,
+		0.0, // 1
+		0.0,
+		0.0, // 2
+		0.0,
+		0.0, // 3
+		0.0
+	]);
+	x = vector( xbuf, 4, 1, 0 );
+	w = vector( wbuf, 4, 2, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		3.0,  // 5.0 + -2.0
+		0.0,
+		6.0,  // 5.0 + 1.0
+		0.0,
+		8.0,  // 5.0 + 3.0
+		0.0,
+		-1.0, // 5.0 + -6.0
+		0.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an output ndarray having a negative stride', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0, // 3
+		4.0   // 4
+	]);
+	wbuf = new Float32Array([
+		0.0, // 4
+		0.0, // 3
+		0.0, // 2
+		0.0, // 1
+		0.0  // 0
+	]);
+	x = vector( xbuf, 5, 1, 0 );
+	w = vector( wbuf, 5, -1, 4 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		9.0,  // 5.0 + 4.0
+		-1.0, // 5.0 + -6.0
+		8.0,  // 5.0 + 3.0
+		6.0,  // 5.0 + 1.0
+		3.0   // 5.0 + -2.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an input ndarray having a non-zero offset', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		1.0,
+		-2.0,
+		3.0,  // 0
+		-6.0, // 1
+		4.0,  // 2
+		0.0
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0  // 2
+	]);
+	x = vector( xbuf, 3, 1, 2 );
+	w = vector( wbuf, 3, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		8.0,  // 5.0 + 3.0
+		-1.0, // 5.0 + -6.0
+		9.0   // 5.0 + 4.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an output ndarray having a non-zero offset', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0   // 2
+	]);
+	wbuf = new Float32Array([
+		0.0,
+		0.0,
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0
+	]);
+	x = vector( xbuf, 3, 1, 0 );
+	w = vector( wbuf, 3, 1, 2 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		0.0,
+		0.0,
+		3.0, // 5.0 + -2.0
+		6.0, // 5.0 + 1.0
+		8.0, // 5.0 + 3.0
+		0.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function returns the output ndarray unchanged when the input ndarray is empty', function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array( [] );
+	wbuf = new Float32Array( [] );
+	x = vector( xbuf, 0, 1, 0 );
+	w = vector( wbuf, 0, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array( [] );
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.native.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.native.js
new file mode 100644
index 000000000000..c595e1f5760c
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/swapx/test/test.native.js
@@ -0,0 +1,448 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 resolve = require( 'path' ).resolve;
+var tape = require( 'tape' );
+var Float32Array = require( '@stdlib/array/float32' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var ndarray = require( '@stdlib/ndarray/base/ctor' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var swapx = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+	'skip': ( swapx instanceof Error )
+};
+
+
+// FUNCTIONS //
+
+/**
+* Returns a one-dimensional ndarray.
+*
+* @private
+* @param {Float32Array} buffer - underlying data buffer
+* @param {NonNegativeInteger} length - number of indexed elements
+* @param {integer} stride - stride length
+* @param {NonNegativeInteger} offset - index offset
+* @returns {ndarray} one-dimensional ndarray
+*/
+function vector( buffer, length, stride, offset ) {
+	return new ndarray( 'float32', buffer, [ length ], [ stride ], offset, 'row-major' );
+}
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof swapx, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function has an arity of 1', opts, function test( t ) {
+	t.strictEqual( swapx.length, 1, 'has expected arity' );
+	t.end();
+});
+
+tape( 'the function adds a scalar constant to each element and assigns results to an output ndarray', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0, // 3
+		4.0   // 4
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0, // 3
+		0.0  // 4
+	]);
+	x = vector( xbuf, 5, 1, 0 );
+	w = vector( wbuf, 5, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		3.0,  // 5.0 + -2.0
+		6.0,  // 5.0 + 1.0
+		8.0,  // 5.0 + 3.0
+		-1.0, // 5.0 + -6.0
+		9.0   // 5.0 + 4.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function copies the input ndarray to the output ndarray when alpha is zero', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0, // 3
+		4.0   // 4
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0, // 3
+		0.0  // 4
+	]);
+	x = vector( xbuf, 5, 1, 0 );
+	w = vector( wbuf, 5, 1, 0 );
+	alpha = scalar2ndarray( 0.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		-2.0,
+		1.0,
+		3.0,
+		-6.0,
+		4.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an input ndarray having a non-unit stride', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,
+		3.0,  // 1
+		-6.0,
+		4.0,  // 2
+		0.0,
+		-1.0, // 3
+		-3.0
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0  // 3
+	]);
+	x = vector( xbuf, 4, 2, 0 );
+	w = vector( wbuf, 4, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		3.0, // 5.0 + -2.0
+		8.0, // 5.0 + 3.0
+		9.0, // 5.0 + 4.0
+		4.0  // 5.0 + -1.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an input ndarray having a negative stride', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 4
+		1.0,  // 3
+		3.0,  // 2
+		-6.0, // 1
+		4.0   // 0
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0, // 3
+		0.0  // 4
+	]);
+	x = vector( xbuf, 5, -1, 4 );
+	w = vector( wbuf, 5, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		9.0,  // 5.0 + 4.0
+		-1.0, // 5.0 + -6.0
+		8.0,  // 5.0 + 3.0
+		6.0,  // 5.0 + 1.0
+		3.0   // 5.0 + -2.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an output ndarray having a non-unit stride', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0  // 3
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0,
+		0.0, // 1
+		0.0,
+		0.0, // 2
+		0.0,
+		0.0, // 3
+		0.0
+	]);
+	x = vector( xbuf, 4, 1, 0 );
+	w = vector( wbuf, 4, 2, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		3.0,  // 5.0 + -2.0
+		0.0,
+		6.0,  // 5.0 + 1.0
+		0.0,
+		8.0,  // 5.0 + 3.0
+		0.0,
+		-1.0, // 5.0 + -6.0
+		0.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an output ndarray having a negative stride', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0,  // 2
+		-6.0, // 3
+		4.0   // 4
+	]);
+	wbuf = new Float32Array([
+		0.0, // 4
+		0.0, // 3
+		0.0, // 2
+		0.0, // 1
+		0.0  // 0
+	]);
+	x = vector( xbuf, 5, 1, 0 );
+	w = vector( wbuf, 5, -1, 4 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		9.0,  // 5.0 + 4.0
+		-1.0, // 5.0 + -6.0
+		8.0,  // 5.0 + 3.0
+		6.0,  // 5.0 + 1.0
+		3.0   // 5.0 + -2.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an input ndarray having a non-zero offset', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		1.0,
+		-2.0,
+		3.0,  // 0
+		-6.0, // 1
+		4.0,  // 2
+		0.0
+	]);
+	wbuf = new Float32Array([
+		0.0, // 0
+		0.0, // 1
+		0.0  // 2
+	]);
+	x = vector( xbuf, 3, 1, 2 );
+	w = vector( wbuf, 3, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		8.0,  // 5.0 + 3.0
+		-1.0, // 5.0 + -6.0
+		9.0   // 5.0 + 4.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function supports an output ndarray having a non-zero offset', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array([
+		-2.0, // 0
+		1.0,  // 1
+		3.0   // 2
+	]);
+	wbuf = new Float32Array([
+		0.0,
+		0.0,
+		0.0, // 0
+		0.0, // 1
+		0.0, // 2
+		0.0
+	]);
+	x = vector( xbuf, 3, 1, 0 );
+	w = vector( wbuf, 3, 1, 2 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array([
+		0.0,
+		0.0,
+		3.0, // 5.0 + -2.0
+		6.0, // 5.0 + 1.0
+		8.0, // 5.0 + 3.0
+		0.0
+	]);
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function returns the output ndarray unchanged when the input ndarray is empty', opts, function test( t ) {
+	var expected;
+	var actual;
+	var alpha;
+	var xbuf;
+	var wbuf;
+	var x;
+	var w;
+
+	xbuf = new Float32Array( [] );
+	wbuf = new Float32Array( [] );
+	x = vector( xbuf, 0, 1, 0 );
+	w = vector( wbuf, 0, 1, 0 );
+	alpha = scalar2ndarray( 5.0, {
+		'dtype': 'float32'
+	});
+
+	actual = swapx( [ x, w, alpha ] );
+	t.strictEqual( actual, w, 'returns expected value' );
+
+	expected = new Float32Array( [] );
+	t.deepEqual( wbuf, expected, 'returns expected value' );
+
+	t.end();
+});