58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2020 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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// MODULES //
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var Float64Array = require( '@stdlib/array/float64' );
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var abs = require( '@stdlib/math/base/special/abs' );
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// MAIN //
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/**
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* Computes an element-wise absolute difference of two matrices and stores the results in a typed array.
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*
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* @param {Matrix} x - first input matrix
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* @param {Matrix} y - second input matrix
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* @returns {Float64Array} output array
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*/
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function absdiff( x, y ) {
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var out;
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var i;
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var j;
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var M;
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var N;
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out = new Float64Array( x.length );
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M = x.shape[ 0 ];
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N = x.shape[ 1 ];
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for ( i = 0; i < M; i++ ) {
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for ( j = 0; j < N; j++ ) {
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out[ ( i*M ) + j ] = abs( x.get( i, j ) - y.get( i, j ) );
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}
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}
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return out;
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}
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// EXPORTS //
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module.exports = absdiff;
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