56 lines
1.2 KiB
JavaScript
56 lines
1.2 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MAIN //
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/**
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* Computes an element-wise subtraction.
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*
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* @private
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* @param {number} x - scalar minuend (implicitly broadcasted to full length array)
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* @param {NumericArray} arr - array of subtrahends
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* @returns {NumericArray} output array
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*
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* @example
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* var x = 3;
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* var arr = [ 1, 2, 2, 3 ];
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*
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* var y = subtract( x, arr );
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* // returns [ 2, 1, 1, 0 ]
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*/
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function subtract( x, arr ) {
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var len;
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var res;
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var i;
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len = arr.length;
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res = new Array( len );
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for ( i = 0; i < len; i++ ) {
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res[ i ] = x - arr[ i ];
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}
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return res;
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}
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// EXPORTS //
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module.exports = subtract;
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