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 | 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 | /**
* @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 bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' );
var defaults = require( './defaults.js' );
// MAIN //
/**
* Returns a loop block size for multi-dimensional array tiled loops.
*
* @param {ArrayLikeObject} dtypes - list of input and output ndarray data types
* @returns {integer} block size (in units of elements)
*
* @example
* var bsize = blockSize( [ 'float64', 'float64', 'float64', 'float64' ] );
* // returns <number>
*/
function blockSize( dtypes ) {
var max;
var len;
var nb;
var i;
len = dtypes.length;
if ( len <= 0 ) {
return defaults.BLOCK_SIZE_IN_ELEMENTS;
}
max = bytesPerElement( dtypes[ 0 ] );
if ( max === null ) {
return defaults.BLOCK_SIZE_IN_ELEMENTS; // e.g., "generic" arrays
}
// Find the largest element size among all arrays...
for ( i = 1; i < len; i++ ) {
nb = bytesPerElement( dtypes[ i ] );
if ( nb === null ) {
return defaults.BLOCK_SIZE_IN_ELEMENTS; // e.g., "generic" arrays
}
if ( nb > max ) {
max = nb;
}
}
nb = ( defaults.BLOCK_SIZE_IN_BYTES/max )|0; // asm type annotation
return ( nb > 0 ) ? nb : 1|0;
}
// EXPORTS //
module.exports = blockSize;
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