feat: add float16 dtype support to array/zero-to-like

lib/node_modules/@stdlib/array/zero-to-like/README.md

@@ -53,6 +53,7 @@ The function recognizes the following data types:
 
 -   `float64`: double-precision floating-point numbers (IEEE 754)
 -   `float32`: single-precision floating-point numbers (IEEE 754)
+-   `float16`: half-precision floating-point numbers (IEEE 754)
 -   `complex128`: double-precision complex floating-point numbers
 -   `complex64`: single-precision complex floating-point numbers
 -   `int32`: 32-bit two's complement signed integers

lib/node_modules/@stdlib/array/zero-to-like/benchmark/benchmark.js

@@ -97,6 +97,28 @@ bench( format( '%s:dtype=float32', pkg ), function benchmark( b ) {
 	b.end();
 });
 
+bench( format( '%s:dtype=float16', pkg ), function benchmark( b ) {
+	var arr;
+	var x;
+	var i;
+
+	x = empty( 0, 'float16' );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		arr = zeroToLike( x );
+		if ( arr.length !== 0 ) {
+			b.fail( 'should have length 0' );
+		}
+	}
+	b.toc();
+	if ( !isTypedArrayLike( arr ) ) {
+		b.fail( 'should return a typed array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});
+
 bench( format( '%s:dtype=complex128', pkg ), function benchmark( b ) {
 	var arr;
 	var x;

lib/node_modules/@stdlib/array/zero-to-like/benchmark/benchmark.length.float16.js

@@ -0,0 +1,96 @@
+/**
+* @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 isTypedArray = require( '@stdlib/assert/is-typed-array' );
+var empty = require( '@stdlib/array/empty' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var zeroToLike = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var x = empty( len, 'float16' );
+	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 = zeroToLike( x );
+			if ( arr.length !== len ) {
+				b.fail( 'unexpected length' );
+			}
+		}
+		b.toc();
+		if ( !isTypedArray( arr ) ) {
+			b.fail( 'should return a typed array' );
+		}
+		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:dtype=float16,len=%d', pkg, len ), f );
+	}
+}
+
+main();

lib/node_modules/@stdlib/array/zero-to-like/docs/repl.txt

@@ -8,6 +8,7 @@
 
     - float64: double-precision floating-point numbers (IEEE 754).
     - float32: single-precision floating-point numbers (IEEE 754).
+    - float16: half-precision floating-point numbers (IEEE 754).
     - complex128: double-precision complex floating-point numbers.
     - complex64: single-precision complex floating-point numbers.
     - int32: 32-bit two's complement signed integers.

lib/node_modules/@stdlib/array/zero-to-like/docs/types/index.d.ts

@@ -58,6 +58,24 @@
 */
 declare function zeroToLike( x: AnyArray, dtype: 'float32' ): Float32Array;
 
+/**
+* Generates a linearly spaced numeric array whose elements increment by 1 starting from zero and having the same length as a provided input array.
+*
+* @param x - input array from which to derive the output array length
+* @param dtype - data type
+* @returns linearly spaced numeric array
+*
+* @example
+* var zeros = require( '@stdlib/array/zeros' );
+*
+* var x = zeros( 2, 'float64' );
+* // returns <Float64Array>[ 0.0, 0.0 ]
+*
+* var y = zeroToLike( x, 'float16' );
+* // returns <Float16Array>[ 0.0, 1.0 ]
+*/
+declare function zeroToLike( x: AnyArray, dtype: 'float16' ): Float16Array;
+
 /**
 * Generates a linearly spaced numeric array whose elements increment by 1 starting from zero and having the same length as a provided input array.
 *
@@ -282,6 +300,24 @@
 */
 declare function zeroToLike( x: Float32Array, dtype?: NumericDataType ): Float32Array;
 
+/**
+* Generates a linearly spaced numeric array whose elements increment by 1 starting from zero and having the same length and data type as a provided input array.
+*
+* @param x - input array from which to derive the output array length
+* @param dtype - data type
+* @returns linearly spaced numeric array
+*
+* @example
+* var zeros = require( '@stdlib/array/zeros' );
+*
+* var x = zeros( 2, 'float16' );
+* // returns <Float16Array>[ 0.0, 0.0 ]
+*
+* var y = zeroToLike( x );
+* // returns <Float16Array>[ 0.0, 1.0 ]
+*/
+declare function zeroToLike( x: Float16Array, dtype?: NumericDataType ): Float16Array;
+
 /**
 * Generates a linearly spaced numeric array whose elements increment by 1 starting from zero and having the same length and data type as a provided input array.
 *
@@ -468,7 +504,7 @@
 * var y = zeroToLike( x );
 * // returns [ 0, 1 ]
 */
 declare function zeroToLike( x: Array<any>, dtype?: NumericDataType ): Array<number>;
 
 /**
 * Generates a linearly spaced numeric array whose elements increment by 1 starting from zero and having the same length and data type as a provided input array.

lib/node_modules/@stdlib/array/zero-to-like/docs/types/test.ts

@@ -25,21 +25,23 @@
 
 // The function returns an array or typed array...
 {
 	zeroToLike( [ 0, 0 ] ); // $ExpectType number[]
 	zeroToLike( new Float64Array( [ 0, 0 ] ) ); // $ExpectType Float64Array
 	zeroToLike( new Float32Array( [ 0, 0 ] ) ); // $ExpectType Float32Array
+	zeroToLike( new Float16Array( [ 0, 0 ] ) ); // $ExpectType Float16Array
 	zeroToLike( new Complex128Array( [ 0, 0 ] ) ); // $ExpectType Complex128Array
 	zeroToLike( new Complex64Array( [ 0, 0 ] ) ); // $ExpectType Complex64Array
 	zeroToLike( new Int32Array( [ 0, 0 ] ) ); // $ExpectType Int32Array
 	zeroToLike( new Int16Array( [ 0, 0 ] ) ); // $ExpectType Int16Array
 	zeroToLike( new Int8Array( [ 0, 0 ] ) ); // $ExpectType Int8Array
 	zeroToLike( new Uint32Array( [ 0, 0 ] ) ); // $ExpectType Uint32Array
 	zeroToLike( new Uint16Array( [ 0, 0 ] ) ); // $ExpectType Uint16Array
 	zeroToLike( new Uint8Array( [ 0, 0 ] ) ); // $ExpectType Uint8Array
 	zeroToLike( new Uint8ClampedArray( [ 0, 0 ] ) ); // $ExpectType Uint8ClampedArray
 
 	zeroToLike( [ 0, 0 ], 'float64' ); // $ExpectType Float64Array
 	zeroToLike( [ 0, 0 ], 'float32' ); // $ExpectType Float32Array
+	zeroToLike( [ 0, 0 ], 'float16' ); // $ExpectType Float16Array
 	zeroToLike( [ 0, 0 ], 'complex128' ); // $ExpectType Complex128Array
 	zeroToLike( [ 0, 0 ], 'complex64' ); // $ExpectType Complex64Array
 	zeroToLike( [ 0, 0 ], 'int32' ); // $ExpectType Int32Array

lib/node_modules/@stdlib/array/zero-to-like/package.json

@@ -63,6 +63,7 @@
     "matrix",
     "float64array",
     "float32array",
+    "float16array",
     "int32array",
     "uint32array",
     "int16array",
@@ -83,6 +84,8 @@
     "single",
     "float",
     "single-precision",
+    "half",
+    "half-precision",
     "float32",
     "ieee754",
     "integer",

lib/node_modules/@stdlib/array/zero-to-like/test/test.js

@@ -23,6 +23,7 @@
 var tape = require( 'tape' );
 var Float64Array = require( '@stdlib/array/float64' );
 var Float32Array = require( '@stdlib/array/float32' );
+var Float16Array = require( '@stdlib/array/float16' );
 var Int32Array = require( '@stdlib/array/int32' );
 var Uint32Array = require( '@stdlib/array/uint32' );
 var Int16Array = require( '@stdlib/array/int16' );
@@ -203,6 +204,38 @@ tape( 'the function returns a filled array (dtype=float32)', function test( t )
 	t.end();
 });
 
+tape( 'the function returns a filled array (float16)', function test( t ) {
+	var expected;
+	var arr;
+	var x;
+
+	x = new Float16Array( 5 );
+	expected = new Float16Array( [ 0.0, 1.0, 2.0, 3.0, 4.0 ] );
+
+	arr = zeroToLike( x );
+	t.strictEqual( instanceOf( arr, Float16Array ), true, 'returns expected value' );
+	t.strictEqual( arr.length, expected.length, 'returns expected value' );
+	t.deepEqual( arr, expected, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function returns a filled array (dtype=float16)', function test( t ) {
+	var expected;
+	var arr;
+	var x;
+
+	x = new Float64Array( 5 );
+	expected = new Float16Array( [ 0.0, 1.0, 2.0, 3.0, 4.0 ] );
+
+	arr = zeroToLike( x, 'float16' );
+	t.strictEqual( instanceOf( arr, Float16Array ), true, 'returns expected value' );
+	t.strictEqual( arr.length, expected.length, 'returns expected value' );
+	t.deepEqual( arr, expected, 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'the function returns a filled array (complex128)', function test( t ) {
 	var expected;
 	var arr;