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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 23x 19x 46x 46x 46x 2x 2x 2x 46x 7x 7x 44x 44x 44x 19x 23x 6x 8x 8x 8x 6x 23x 23x 3x 3x 3x 3x 3x | /** * @license Apache-2.0 * * Copyright (c) 2025 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 isnan = require( '@stdlib/math/base/assert/is-nan' ); var abs = require( '@stdlib/math/base/special/abs' ); // MAIN // /** * Computes the cumulative minimum absolute value of a strided array. * * @private * @param {PositiveInteger} N - number of indexed elements * @param {Object} x - input array object * @param {Collection} x.data - input array data * @param {Array<Function>} x.accessors - array element accessors * @param {integer} strideX - stride length for `x` * @param {NonNegativeInteger} offsetX - starting index for `x` * @param {Object} y - output array object * @param {Collection} y.data - output array data * @param {Array<Function>} y.accessors - array element accessors * @param {integer} strideY - stride length for `y` * @param {NonNegativeInteger} offsetY - starting index for `y` * @returns {Object} output array object * * @example * var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' ); * var arraylike2object = require( '@stdlib/array/base/arraylike2object' ); * * var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ]; * var y = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ]; * * cuminabs( 4, arraylike2object( toAccessorArray( x ) ), 2, 1, arraylike2object( toAccessorArray( y ) ), 1, 0 ); * // y => [ 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0 ]; */ function cuminabs( N, x, strideX, offsetX, y, strideY, offsetY ) { var xbuf; var ybuf; var xget; var yset; var min; var ix; var iy; var v; var i; // Cache references to array data: xbuf = x.data; ybuf = y.data; // Cache references to element accessors: xget = x.accessors[ 0 ]; yset = y.accessors[ 1 ]; ix = offsetX; iy = offsetY; min = abs( xget( xbuf, ix ) ); yset( ybuf, iy, min ); iy += strideY; i = 1; if ( isnan( min ) === false ) { for ( i; i < N; i++ ) { ix += strideX; v = abs( xget( xbuf, ix ) ); if ( isnan( v ) ) { min = v; break; } if ( v < min ) { min = v; } yset( ybuf, iy, min ); iy += strideY; } } if ( isnan( min ) ) { for ( i; i < N; i++ ) { yset( ybuf, iy, min ); iy += strideY; } } return y; } // EXPORTS // module.exports = cuminabs; |