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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 5x 5x 1x 1x 5x 20x 20x 20x 56x 39x 39x 19x 19x 19x 56x 17x 17x 17x 56x 20x 20x 1x 1x 1x 1x 1x | /**
* @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';
// MAIN //
/**
* Flattens a shape starting from a specified dimension and assigns results to a provided output array.
*
* @param {NonNegativeIntegerArray} shape - array shape
* @param {integer} dim - dimension to start flattening from
* @param {Collection} out - output object
* @returns {Collection} array shape
*
* @example
* var sh = [ 0, 0 ];
*
* var out = flattenShapeFrom( [ 3, 3, 2 ], 1, sh );
* // returns [ 3, 6 ]
*
* var bool = ( out === sh );
* // returns true
*
* @example
* var sh = [ 0, 0 ];
*
* var out = flattenShapeFrom( [ 3, 3, 2 ], -2, sh );
* // returns [ 3, 6 ]
*
* var bool = ( out === sh );
* // returns true
*/
function flattenShapeFrom( shape, dim, out ) {
var ndims;
var s;
var i;
var j;
ndims = shape.length;
// Normalize the dimension index...
if ( dim < 0 ) {
dim += ndims;
if ( dim < 0 ) {
dim = 0;
}
}
s = 1;
j = 0;
for ( i = 0; i < ndims; i++ ) { // e.g., shape=[2,3,4,5], dim=2 => shape=[2,3,20]
if ( i >= dim ) {
s *= shape[ i ];
if ( i === ndims-1 ) {
out[ j ] = s;
j += 1;
}
} else {
out[ j ] = shape[ i ];
j += 1;
}
}
return out;
}
// EXPORTS //
module.exports = flattenShapeFrom;
|