feat: add blas/ext/base/zdiff

lib/node_modules/@stdlib/blas/ext/base/zdiff/benchmark/benchmark.js

@@ -0,0 +1,135 @@
+/**
+* @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/array/uniform' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var Complex128Array = require( '@stdlib/array/complex128' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var zdiff = require( './../lib/zdiff.js' );
+
+
+// VARIABLES //
+
+var options = {
+	'dtype': 'float64'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var obuf;
+	var wbuf;
+	var xbuf;
+	var pbuf;
+	var abuf;
+	var ol;
+	var N1;
+	var N2;
+	var x;
+	var p;
+	var a;
+	var w;
+	var o;
+	var k;
+	var N;
+
+	N = len;
+	N1 = 1;
+	N2 = 1;
+	k = 1;
+	ol = N + N1 + N2 - k;
+
+	xbuf = uniform( N*2, -100.0, 100.0, options );
+	pbuf = uniform( N1*2, -100.0, 100.0, options );
+	abuf = uniform( N2*2, -100.0, 100.0, options );
+	wbuf = uniform( (N+N1+N2-1)*2, -100.0, 100.0, options );
+	obuf = uniform( ol*2, -100.0, 100.0, options );
+
+	x = new Complex128Array( xbuf.buffer );
+	p = new Complex128Array( pbuf.buffer );
+	a = new Complex128Array( abuf.buffer );
+	w = new Complex128Array( wbuf.buffer );
+	o = new Complex128Array( obuf.buffer );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			zdiff( N, k, x, 1, N1, p, 1, N2, a, 1, o, 1, w, 1 );
+			if ( isnan( obuf[ i%(ol*2) ] ) ) {
+				b.fail( 'should not return NaN' );
+			}
+		}
+		b.toc();
+		if ( isnan( obuf[ i%(ol*2) ] ) ) {
+			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( format( '%s:len=%d', pkg, len ), f );
+	}
+}
+
+main();

lib/node_modules/@stdlib/blas/ext/base/zdiff/benchmark/benchmark.native.js

@@ -0,0 +1,140 @@
+/**
+* @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/array/uniform' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var Complex128Array = require( '@stdlib/array/complex128' );
+var format = require( '@stdlib/string/format' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var options = {
+	'dtype': 'float64'
+};
+var zdiff = tryRequire( resolve( __dirname, './../lib/zdiff.native.js' ) );
+var opts = {
+	'skip': ( zdiff instanceof Error )
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var obuf;
+	var wbuf;
+	var xbuf;
+	var pbuf;
+	var abuf;
+	var ol;
+	var N1;
+	var N2;
+	var x;
+	var p;
+	var a;
+	var w;
+	var o;
+	var k;
+	var N;
+
+	N = len;
+	N1 = 1;
+	N2 = 1;
+	k = 1;
+	ol = N + N1 + N2 - k;
+
+	xbuf = uniform( N*2, -100.0, 100.0, options );
+	pbuf = uniform( N1*2, -100.0, 100.0, options );
+	abuf = uniform( N2*2, -100.0, 100.0, options );
+	wbuf = uniform( (N+N1+N2-1)*2, -100.0, 100.0, options );
+	obuf = uniform( ol*2, -100.0, 100.0, options );
+
+	x = new Complex128Array( xbuf.buffer );
+	p = new Complex128Array( pbuf.buffer );
+	a = new Complex128Array( abuf.buffer );
+	w = new Complex128Array( wbuf.buffer );
+	o = new Complex128Array( obuf.buffer );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			zdiff( N, k, x, 1, N1, p, 1, N2, a, 1, o, 1, w, 1 );
+			if ( isnan( obuf[ i%(ol*2) ] ) ) {
+				b.fail( 'should not return NaN' );
+			}
+		}
+		b.toc();
+		if ( isnan( obuf[ i%(ol*2) ] ) ) {
+			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( format( '%s::native:len=%d', pkg, len ), opts, f );
+	}
+}
+
+main();