All files / reinterpret-boolean/lib main.js

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/**
* @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 reinterpret = require( '@stdlib/strided/base/reinterpret-boolean' );
var ndarray = require( '@stdlib/ndarray/base/ctor' );
var getShape = require( '@stdlib/ndarray/base/shape' );
var getStrides = require( '@stdlib/ndarray/base/strides' );
var getOffset = require( '@stdlib/ndarray/base/offset' );
var getOrder = require( '@stdlib/ndarray/base/order' );
var getData = require( '@stdlib/ndarray/base/data-buffer' );
 
 
// MAIN //
 
/**
* Reinterprets a boolean ndarray as an unsigned 8-bit integer ndarray.
*
* ## Notes
*
* -   The returned ndarray is a view on the input ndarray data buffer.
* -   The returned ndarray is a "base" ndarray, and, thus, the returned ndarray does not perform bounds checking or afford any of the guarantees of the non-base ndarray constructor. The primary intent of this function is to reinterpret an ndarray-like object within internal implementations and to do so with minimal overhead.
*
* @param {ndarray} x - input ndarray
* @returns {ndarray} unsigned 8-bit integer ndarray view
*
* @example
* var falses = require( '@stdlib/ndarray/base/falses' );
*
* var x = falses( 'bool', [ 2, 2 ], 'row-major' );
* // returns <ndarray>[ [ false, false ], [ false, false ] ]
*
* var out = reinterpretBoolean( x );
* // returns <ndarray>[ [ 0, 0 ], [ 0, 0 ] ]
*/
function reinterpretBoolean( x ) {
	var strides;
	var shape;

	shape = getShape( x, true );
	strides = getStrides( x, true );

	return ndarray( 'uint8', reinterpret( getData( x ), 0 ), shape, strides, getOffset( x ), getOrder( x ) );
}
 
 
// EXPORTS //
 
module.exports = reinterpretBoolean;