diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
new file mode 100644
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--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/README.md
@@ -0,0 +1,143 @@
+
+
+# dapx
+
+> Add a scalar constant to each element in a double-precision floating-point ndarray.
+
+
+
+## Usage
+
+```javascript
+var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
+```
+
+#### dapx( arrays )
+
+Adds a scalar constant to each element in a double-precision floating-point ndarray.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+
+var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+
+var alpha = scalar2ndarray( 5.0, {
+ 'dtype': 'float64'
+});
+
+var out = dapx( [ x, alpha ] );
+// returns
+
+var bool = ( out === x );
+// returns true
+```
+
+The function has the following parameters:
+
+- **arrays**: array-like object containing an input ndarray and a zero-dimensional ndarray containing the scalar constant.
+
+Note that indexing is relative to the first index. To introduce an offset, use [`ndarray`][@stdlib/ndarray/ctor] view creation.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+
+// Initial array:
+var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
+
+// Create an ndarray view:
+var x = new ndarray( 'float64', xbuf, [ 3 ], [ 1 ], 2, 'row-major' );
+
+var alpha = scalar2ndarray( 5.0, {
+ 'dtype': 'float64'
+});
+
+var out = dapx( [ x, alpha ] );
+// returns
+```
+
+
+
+
+
+
+
+## Notes
+
+- The function **mutates** the input ndarray.
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
+
+var xbuf = discreteUniform( 10, 0, 100, {
+ 'dtype': 'float64'
+});
+var x = new ndarray( 'float64', xbuf, [ 10 ], [ 1 ], 0, 'row-major' );
+
+console.log( x.data );
+
+var alpha = scalar2ndarray( 5.0, {
+ 'dtype': 'float64'
+});
+
+dapx( [ x, alpha ] );
+
+console.log( x.data );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[@stdlib/ndarray/ctor]: https://github.com/stdlib-js/ndarray-ctor
+
+
+
+
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
new file mode 100644
index 000000000000..c42df3ef7d05
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/benchmark/benchmark.js
@@ -0,0 +1,108 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var pkg = require( './../package.json' ).name;
+var dapx = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var alpha;
+ var xbuf;
+ var x;
+
+ xbuf = discreteUniform( len, -100, 100, {
+ 'dtype': 'float64'
+ });
+ x = new ndarray( 'float64', xbuf, [ len ], [ 1 ], 0, 'row-major' );
+ alpha = scalar2ndarray( 5.0, {
+ 'dtype': 'float64'
+ });
+
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var z;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ z = dapx( [ x, alpha ] );
+ if ( isnanf( z.data[ i % len ] ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( z.data[ i % len ] ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+ f = createBenchmark( len );
+ bench( pkg+':len='+len, f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
new file mode 100644
index 000000000000..ca1dfa374711
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/repl.txt
@@ -0,0 +1,27 @@
+{{alias}}( arrays )
+
+ Adds a scalar constant to each element in a double-precision floating-
+ point ndarray.
+
+ Parameters
+ ----------
+ arrays: ArrayLikeObject
+ Array-like object containing an input ndarray and a zero-dimensional
+ ndarray containing the scalar constant.
+
+ Returns
+ -------
+ out: ndarray
+ Input ndarray.
+
+ Examples
+ --------
+ > var xbuf = new {{alias:@stdlib/array/float64}}( [ 1.0, 2.0, 3.0, 4.0 ] );
+ > var x = {{alias:@stdlib/ndarray/ctor}}( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+ > var alpha = {{alias:@stdlib/ndarray/from-scalar}}( 5.0, { 'dtype': 'float64' } );
+ > {{alias}}( [ x, alpha ] )
+
+
+ See Also
+ --------
+
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
new file mode 100644
index 000000000000..3a2693bbe459
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/index.d.ts
@@ -0,0 +1,51 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+// TypeScript Version: 4.1
+
+///
+
+import { float64ndarray } from '@stdlib/types/ndarray';
+
+/**
+* Adds a scalar constant to each element in a double-precision floating-point ndarray.
+*
+* @param arrays - array-like object containing an input ndarray and a zero-dimensional ndarray containing the scalar constant
+* @returns input ndarray
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var ndarray = require( '@stdlib/ndarray/ctor' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+*
+* var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+* var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+*
+* var alpha = scalar2ndarray( 5.0, {
+* 'dtype': 'float64'
+* });
+*
+* var out = dapx( [ x, alpha ] );
+* // returns
+*/
+declare function dapx( arrays: ArrayLike ): float64ndarray;
+
+
+// EXPORTS //
+
+export = dapx;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
new file mode 100644
index 000000000000..635361218eb9
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/docs/types/test.ts
@@ -0,0 +1,61 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import zeros = require( '@stdlib/ndarray/zeros' );
+import dapx = require( './index' );
+
+
+// TESTS //
+
+// The function returns an ndarray...
+{
+ const x = zeros( [ 10 ], {
+ 'dtype': 'float64'
+ });
+ const alpha = zeros( [], {
+ 'dtype': 'float64'
+ });
+
+ dapx( [ x, alpha ] ); // $ExpectType float64ndarray
+}
+
+// The compiler throws an error if the function is provided a first argument which is not an array of ndarrays...
+{
+ dapx( '10' ); // $ExpectError
+ dapx( 10 ); // $ExpectError
+ dapx( true ); // $ExpectError
+ dapx( false ); // $ExpectError
+ dapx( null ); // $ExpectError
+ dapx( undefined ); // $ExpectError
+ dapx( [] ); // $ExpectError
+ dapx( {} ); // $ExpectError
+ dapx( ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+ const x = zeros( [ 10 ], {
+ 'dtype': 'float64'
+ });
+ const alpha = zeros( [], {
+ 'dtype': 'float64'
+ });
+
+ dapx(); // $ExpectError
+ dapx( [ x, alpha ], {} ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
new file mode 100644
index 000000000000..6e2ee86498c8
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/examples/index.js
@@ -0,0 +1,39 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var ndarray = require( '@stdlib/ndarray/ctor' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+var dapx = require( './../lib' );
+
+var xbuf = discreteUniform( 10, 0, 100, {
+ 'dtype': 'float64'
+});
+var x = new ndarray( 'float64', xbuf, [ 10 ], [ 1 ], 0, 'row-major' );
+
+console.log( x.data );
+
+var alpha = scalar2ndarray( 5.0, {
+ 'dtype': 'float64'
+});
+
+dapx( [ x, alpha ] );
+
+console.log( x.data );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
new file mode 100644
index 000000000000..0144666ea6e9
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/index.js
@@ -0,0 +1,50 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+/**
+* Add a scalar constant to each element in a double-precision floating-point ndarray.
+*
+* @module @stdlib/blas/ext/base/ndarray/dapx
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+* var ndarray = require( '@stdlib/ndarray/ctor' );
+* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
+* var dapx = require( '@stdlib/blas/ext/base/ndarray/dapx' );
+*
+* var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+* var x = new ndarray( 'float64', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
+*
+* var alpha = scalar2ndarray( 5.0, {
+* 'dtype': 'float64'
+* });
+*
+* var out = dapx( [ x, alpha ] );
+* // returns
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
new file mode 100644
index 000000000000..e90e6e95fd3a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dapx/lib/main.js
@@ -0,0 +1,67 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var numelDimension = require( '@stdlib/ndarray/base/numel-dimension' );
+var strided = require( '@stdlib/blas/ext/base/dapx' ).ndarray;
+var getStride = require( '@stdlib/ndarray/base/stride' );
+var getOffset = require( '@stdlib/ndarray/base/offset' );
+var getData = require( '@stdlib/ndarray/base/data-buffer' );
+var ndarraylike2scalar = require( '@stdlib/ndarray/base/ndarraylike2scalar' );
+
+
+// MAIN //
+
+/**
+* Adds a scalar constant to each element in a double-precision floating-point ndarray.
+*
+* @param {ArrayLikeObject