Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 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 85x 85x 85x 85x 85x 85x 85x 85x 8x 8x 77x 77x 85x 36x 36x 41x 41x 85x 107x 33x 33x 74x 74x 74x 8x 85x 3x 3x 3x 3x 3x | /**
* @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 arraylike2object = require( '@stdlib/array/base/arraylike2object' );
var isAlmostEqual = require( '@stdlib/assert/is-almost-equal' );
var accessors = require( './accessors.js' );
// MAIN //
/**
* Returns the index of the first element in a strided array which is almost equal to a corresponding element in another strided array using alternative indexing semantics.
*
* ## Notes
*
* - If the function is unable to find matching elements, the function returns `-1`.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {NonNegativeInteger} maxULP - maximum allowed ULP difference
* @param {Collection} x - first input array
* @param {integer} strideX - stride length for `x`
* @param {NonNegativeInteger} offsetX - starting index for `x`
* @param {Collection} y - second input array
* @param {integer} strideY - stride length for `y`
* @param {NonNegativeInteger} offsetY - starting index for `y`
* @returns {integer} index
*
* @example
* var x = [ 1.0, 2.0, 3.0, 4.0 ];
* var y = [ 0.0, 0.0, 3.0, 0.0 ];
*
* var idx = gfirstIndexAlmostEqual( x.length, 1, x, 1, 0, y, 1, 0 );
* // returns 2
*/
function gfirstIndexAlmostEqual( N, maxULP, x, strideX, offsetX, y, strideY, offsetY ) { // eslint-disable-line max-len
var ix;
var iy;
var ox;
var oy;
var i;
if ( N <= 0 ) {
return -1;
}
ox = arraylike2object( x );
oy = arraylike2object( y );
if ( ox.accessorProtocol || oy.accessorProtocol ) {
return accessors( N, maxULP, ox, strideX, offsetX, oy, strideY, offsetY ); // eslint-disable-line max-len
}
ix = offsetX;
iy = offsetY;
for ( i = 0; i < N; i++ ) {
if ( isAlmostEqual( x[ ix ], y[ iy ], maxULP ) ) {
return i;
}
ix += strideX;
iy += strideY;
}
return -1;
}
// EXPORTS //
module.exports = gfirstIndexAlmostEqual;
|