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