feat: add boolean dtype support to ndarray/empty* and ndarray/base/empty* packages

lib/node_modules/@stdlib/ndarray/base/empty-like/README.md

@@ -85,7 +85,7 @@ var sh = y.shape;
 
 ```javascript
 var dtypes = require( '@stdlib/ndarray/dtypes' );
-var zeros = require( '@stdlib/ndarray/base/zeros' );
+var empty = require( '@stdlib/ndarray/base/empty' );
 var emptyLike = require( '@stdlib/ndarray/base/empty-like' );
 
 // Get a list of data types:
@@ -96,7 +96,7 @@ var x;
 var y;
 var i;
 for ( i = 0; i < dt.length; i++ ) {
-    x = zeros( dt[ i ], [ 2, 2 ], 'row-major' );
+    x = empty( dt[ i ], [ 2, 2 ], 'row-major' );
     y = emptyLike( x );
     console.log( y.data );
 }

lib/node_modules/@stdlib/ndarray/base/empty-like/benchmark/benchmark.js

@@ -23,6 +23,7 @@
 var bench = require( '@stdlib/bench' );
 var isndarrayLike = require( '@stdlib/assert/is-ndarray-like' );
 var zeros = require( '@stdlib/ndarray/base/zeros' );
+var empty = require( '@stdlib/ndarray/base/empty' );
 var pkg = require( './../package.json' ).name;
 var emptyLike = require( './../lib' );
 
@@ -271,6 +272,28 @@ bench( pkg+'::base:dtype=uint8c', function benchmark( b ) {
 	b.end();
 });
 
+bench( pkg+'::base:dtype=bool', function benchmark( b ) {
+	var x;
+	var y;
+	var i;
+
+	x = empty( 'bool', [ 0 ], 'row-major' );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		y = emptyLike( x );
+		if ( y.length !== 0 ) {
+			b.fail( 'should have length 0' );
+		}
+	}
+	b.toc();
+	if ( !isndarrayLike( y ) ) {
+		b.fail( 'should return an ndarray' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});
+
 bench( pkg+'::base:dtype=generic', function benchmark( b ) {
 	var x;
 	var y;

lib/node_modules/@stdlib/ndarray/base/empty-like/benchmark/benchmark.size.bool.js

@@ -0,0 +1,95 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 pow = require( '@stdlib/math/base/special/pow' );
+var isndarrayLike = require( '@stdlib/assert/is-ndarray-like' );
+var empty = require( '@stdlib/ndarray/base/empty' );
+var pkg = require( './../package.json' ).name;
+var emptyLike = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var x = empty( 'bool', [ len ], 'row-major' );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var arr;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			arr = emptyLike( x );
+			if ( arr.length !== len ) {
+				b.fail( 'unexpected length' );
+			}
+		}
+		b.toc();
+		if ( !isndarrayLike( arr ) ) {
+			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( pkg+'::base:dtype=bool,size='+len, f );
+	}
+}
+
+main();

lib/node_modules/@stdlib/ndarray/base/empty-like/docs/types/index.d.ts

@@ -20,7 +20,7 @@
 
 /// <reference types="@stdlib/types"/>
 
-import { ndarray, typedndarray, float64ndarray, float32ndarray, int32ndarray, int16ndarray, int8ndarray, uint32ndarray, uint16ndarray, uint8ndarray, uint8cndarray, complex128ndarray, complex64ndarray, DataType } from '@stdlib/types/ndarray';
+import { typedndarray, float64ndarray, float32ndarray, int32ndarray, int16ndarray, int8ndarray, uint32ndarray, uint16ndarray, uint8ndarray, uint8cndarray, boolndarray, complex128ndarray, complex64ndarray } from '@stdlib/types/ndarray';
 
 /**
 * Creates an uninitialized array having the same shape and data type as a provided input ndarray.
@@ -341,6 +341,35 @@ declare function emptyLike( x: uint8ndarray ): uint8ndarray;
 */
 declare function emptyLike( x: uint8cndarray ): uint8cndarray;
 
+/**
+* Creates an uninitialized array having the same shape and data type as a provided input ndarray.
+*
+* @param x - input array
+* @returns output array
+*
+* @example
+* var empty = require( '@stdlib/ndarray/base/empty' );
+*
+* var x = empty( 'bool', [ 2, 2 ], 'row-major' );
+* // returns <ndarray>
+*
+* var sh = x.shape;
+* // returns [ 2, 2 ]
+*
+* var dt = x.dtype;
+* // returns 'bool'
+*
+* var y = emptyLike( x );
+* // returns <ndarray>
+*
+* sh = y.shape;
+* // returns [ 2, 2 ]
+*
+* dt = y.dtype;
+* // returns 'bool'
+*/
+declare function emptyLike( x: boolndarray ): boolndarray;
+
 /**
 * Creates an uninitialized array having the same shape and data type as a provided input ndarray.
 *
@@ -368,7 +397,7 @@ declare function emptyLike( x: uint8cndarray ): uint8cndarray;
 * dt = y.dtype;
 * // returns 'generic'
 */
-declare function emptyLike( x: ndarray ): typedndarray<number>;
+declare function emptyLike<T = unknown>( x: typedndarray<T> ): typedndarray<T>;
 
 
 // EXPORTS //

lib/node_modules/@stdlib/ndarray/base/empty-like/docs/types/test.ts

@@ -17,6 +17,7 @@
 */
 
 import zeros = require( '@stdlib/ndarray/base/zeros' );
+import empty = require( '@stdlib/ndarray/base/empty' );
 import emptyLike = require( './index' );
 
 
@@ -38,6 +39,7 @@ import emptyLike = require( './index' );
 	emptyLike( zeros( 'uint16', sh, ord ) ); // $ExpectType uint16ndarray
 	emptyLike( zeros( 'uint8', sh, ord ) ); // $ExpectType uint8ndarray
 	emptyLike( zeros( 'uint8c', sh, ord ) ); // $ExpectType uint8cndarray
+	emptyLike( empty( 'bool', sh, ord ) ); // $ExpectType boolndarray
 	emptyLike( zeros( 'generic', sh, ord ) ); // $ExpectType typedndarray<number>
 }
 

lib/node_modules/@stdlib/ndarray/base/empty-like/examples/index.js

@@ -19,7 +19,7 @@
 'use strict';
 
 var dtypes = require( '@stdlib/ndarray/dtypes' );
-var zeros = require( '@stdlib/ndarray/base/zeros' );
+var empty = require( '@stdlib/ndarray/base/empty' );
 var emptyLike = require( './../lib' );
 
 // Get a list of data types:
@@ -30,7 +30,7 @@ var x;
 var y;
 var i;
 for ( i = 0; i < dt.length; i++ ) {
-	x = zeros( dt[ i ], [ 2, 2 ], 'row-major' );
+	x = empty( dt[ i ], [ 2, 2 ], 'row-major' );
 	y = emptyLike( x );
 	console.log( y.data );
 }

lib/node_modules/@stdlib/ndarray/base/empty-like/test/test.js

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2023 The Stdlib Authors.
+* Copyright (c) 2024 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.
@@ -32,13 +32,15 @@ var Uint8Array = require( '@stdlib/array/uint8' );
 var Uint8ClampedArray = require( '@stdlib/array/uint8c' );
 var Complex64Array = require( '@stdlib/array/complex64' );
 var Complex128Array = require( '@stdlib/array/complex128' );
+var BooleanArray = require( '@stdlib/array/bool' );
 var Buffer = require( '@stdlib/buffer/ctor' );
 var allocUnsafe = require( '@stdlib/buffer/alloc-unsafe' );
 var instanceOf = require( '@stdlib/assert/instance-of' );
 var base = require( '@stdlib/ndarray/base/ctor' );
 var ndarray = require( '@stdlib/ndarray/ctor' );
 var array = require( '@stdlib/ndarray/array' );
 var zeros = require( '@stdlib/ndarray/base/zeros' );
+var empty = require( '@stdlib/ndarray/base/empty' );
 var emptyLike = require( './../lib' );
 
 
@@ -518,6 +520,42 @@ tape( 'the function returns an uninitialized array (dtype=complex64, non-base)',
 	t.end();
 });
 
+tape( 'the function returns an uninitialized array (dtype=bool, base)', function test( t ) {
+	var arr;
+	var x;
+
+	x = empty( 'bool', [ 2, 2 ], 'row-major' );
+	arr = emptyLike( x );
+
+	t.strictEqual( instanceOf( arr, base ), true, 'returns expected value' );
+	t.strictEqual( arr.dtype, 'bool', 'returns expected value' );
+	t.deepEqual( arr.shape, [ 2, 2 ], 'returns expected value' );
+	t.strictEqual( instanceOf( arr.data, BooleanArray ), true, 'returns expected value' );
+	t.strictEqual( arr.order, 'row-major', 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function returns an uninitialized array (dtype=bool, non-base)', function test( t ) {
+	var arr;
+	var x;
+
+	x = array( new BooleanArray( 4 ), {
+		'shape': [ 2, 2 ],
+		'dtype': 'bool',
+		'order': 'column-major'
+	});
+	arr = emptyLike( x );
+
+	t.strictEqual( instanceOf( arr, ndarray ), true, 'returns expected value' );
+	t.strictEqual( arr.dtype, 'bool', 'returns expected value' );
+	t.deepEqual( arr.shape, [ 2, 2 ], 'returns expected value' );
+	t.strictEqual( instanceOf( arr.data, BooleanArray ), true, 'returns expected value' );
+	t.strictEqual( arr.order, 'column-major', 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'the function returns an uninitialized array (dtype=generic, base)', function test( t ) {
 	var expected;
 	var arr;

lib/node_modules/@stdlib/ndarray/base/empty/benchmark/benchmark.js

@@ -226,6 +226,24 @@ bench( pkg+':dtype=uint8c', function benchmark( b ) {
 	b.end();
 });
 
+bench( pkg+':dtype=bool', function benchmark( b ) {
+	var arr;
+	var i;
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		arr = empty( 'bool', [ 0 ], 'row-major' );
+		if ( arr.length !== 0 ) {
+			b.fail( 'should have length 0' );
+		}
+	}
+	b.toc();
+	if ( !isndarrayLike( arr ) ) {
+		b.fail( 'should return an ndarray' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});
+
 bench( pkg+':dtype=generic', function benchmark( b ) {
 	var arr;
 	var i;