All files / ndarray/smskmaxabs/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 numelDimension = require( '@stdlib/ndarray/base/numel-dimension' );
var getStride = require( '@stdlib/ndarray/base/stride' );
var getOffset = require( '@stdlib/ndarray/base/offset' );
var getData = require( '@stdlib/ndarray/base/data-buffer' );
var strided = require( '@stdlib/stats/strided/smskmaxabs' ).ndarray;
 
 
// MAIN //
 
/**
* Computes the maximum absolute value of a one-dimensional single-precision floating-point ndarray according to a mask.
*
* ## Notes
*
* -   The function expects the following ndarrays:
*
*     -   a one-dimensional input ndarray.
*     -   a one-dimensional mask ndarray.
*
* @param {ArrayLikeObject<Object>} arrays - array-like object containing ndarrays
* @returns {number} maximum absolute value
*
* @example
* var Float32Vector = require( '@stdlib/ndarray/vector/float32' );
* var Uint8Vector = require( '@stdlib/ndarray/vector/uint8' );
*
* var x = new Float32Vector( [ 1.0, -5.0, 4.0, 2.0 ] );
* var mask = new Uint8Vector( [ 0, 0, 1, 0 ] );
*
* var v = smskmaxabs( [ x, mask ] );
* // returns 5.0
*/
function smskmaxabs( arrays ) {
	var mask = arrays[ 1 ];
	var x = arrays[ 0 ];
	return strided( numelDimension( x, 0 ), getData( x ), getStride( x, 0 ), getOffset( x ), getData( mask ), getStride( mask, 0 ), getOffset( mask ) ); // eslint-disable-line max-len
}
 
 
// EXPORTS //
 
module.exports = smskmaxabs;