feat: add float16 dtype support to array/nans

lib/node_modules/@stdlib/array/nans/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
 -   `generic`: generic JavaScript values

lib/node_modules/@stdlib/array/nans/benchmark/benchmark.js

@@ -84,6 +84,24 @@ bench( format( '%s:dtype=%s', pkg, 'float32' ), function benchmark( b ) {
 	b.end();
 });
 
+bench( format( '%s:dtype=%s', pkg, 'float16' ), function benchmark( b ) {
+	var arr;
+	var i;
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		arr = nans( 0, 'float16' );
+		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=%s', pkg, 'complex128' ), function benchmark( b ) {
 	var arr;
 	var i;

lib/node_modules/@stdlib/array/nans/benchmark/benchmark.length.float16.js

@@ -0,0 +1,94 @@
+/**
+* @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 pow = require( '@stdlib/math/base/special/pow' );
+var isTypedArray = require( '@stdlib/assert/is-typed-array' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var nans = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	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 = nans( len, 'float16' );
+			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=%s,len=%d', pkg, 'float16', len ), f );
+	}
+}
+
+main();

lib/node_modules/@stdlib/array/nans/docs/repl.txt

@@ -6,6 +6,7 @@
 
     - 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
     - generic: generic JavaScript values

lib/node_modules/@stdlib/array/nans/docs/types/index.d.ts

@@ -20,7 +20,7 @@
 
 /// <reference types="@stdlib/types"/>
 
-import { Complex128Array, Complex64Array, FloatingPointDataType } from '@stdlib/types/array';
+import { Complex128Array, Complex64Array, Float16Array, FloatingPointDataType } from '@stdlib/types/array';
 
 /**
 * Data type.
@@ -53,6 +53,19 @@ declare function nans( length: number, dtype: 'float64' ): Float64Array;
 */
 declare function nans( length: number, dtype: 'float32' ): Float32Array;
 
+/**
+* Creates an array filled with NaNs and having a specified length.
+*
+* @param length - array length
+* @param dtype - data type
+* @returns filled array
+*
+* @example
+* var arr = nans( 2, 'float16' );
+* // returns <Float16Array>[ NaN, NaN ]
+*/
+declare function nans( length: number, dtype: 'float16' ): Float16Array;
+
 /**
 * Creates an array filled with NaNs and having a specified length.
 *
@@ -107,6 +120,7 @@ declare function nans( length: number, dtype: 'generic' ): Array<number>;
 *
 * -   `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
 * -   `generic`: generic JavaScript values

lib/node_modules/@stdlib/array/nans/docs/types/test.ts

@@ -26,6 +26,7 @@ import nans = require( './index' );
 	nans( 10 ); // $ExpectType Float64Array
 	nans( 10, 'float64' ); // $ExpectType Float64Array
 	nans( 10, 'float32' ); // $ExpectType Float32Array
+	nans( 10, 'float16' ); // $ExpectType Float16ArrayFallback
 	nans( 10, 'complex128' ); // $ExpectType Complex128Array
 	nans( 10, 'complex64' ); // $ExpectType Complex64Array
 	nans( 10, 'generic' ); // $ExpectType number[]

lib/node_modules/@stdlib/array/nans/package.json

@@ -63,6 +63,7 @@
     "matrix",
     "float64array",
     "float32array",
+    "float16array",
     "complex128array",
     "complex64array",
     "complex128",
@@ -77,6 +78,9 @@
     "float",
     "single-precision",
     "float32",
+    "half",
+    "half-precision",
+    "float16",
     "ieee754",
     "generic",
     "fill",

lib/node_modules/@stdlib/array/nans/test/test.js

@@ -23,8 +23,10 @@
 var tape = require( 'tape' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var isnanf16 = require( '@stdlib/number/float16/base/assert/is-nan' );
 var Float64Array = require( '@stdlib/array/float64' );
 var Float32Array = require( '@stdlib/array/float32' );
+var Float16Array = require( '@stdlib/array/float16' );
 var Complex64Array = require( '@stdlib/array/complex64' );
 var Complex128Array = require( '@stdlib/array/complex128' );
 var reinterpret64 = require( '@stdlib/strided/base/reinterpret-complex64' );
@@ -178,6 +180,20 @@ tape( 'the function returns a filled array (dtype=float32)', function test( t )
 	t.end();
 });
 
+tape( 'the function returns a filled array (dtype=float16)', function test( t ) {
+	var arr;
+	var i;
+
+	arr = nans( 5, 'float16' );
+	t.strictEqual( instanceOf( arr, Float16Array ), true, 'returns expected value' );
+	t.strictEqual( arr.length, 5, 'returns expected value' );
+
+	for ( i = 0; i < arr.length; i++ ) {
+		t.strictEqual( isnanf16( arr[ i ] ), true, 'returns expected value for element '+i );
+	}
+	t.end();
+});
+
 tape( 'the function returns a filled array (dtype=complex128)', function test( t ) {
 	var arr;
 	var i;