All files resolve_stride.js

100% Statements 46/46
100% Branches 6/6
100% Functions 1/1
100% Lines 46/46

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 473x 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 518x 518x 518x 190x 190x 518x 240x 240x 88x 518x 3x 3x 3x 3x 3x  
/**
* @license Apache-2.0
*
* Copyright (c) 2024 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 //
 
/**
* Resolves a stride length for broadcasting a one-dimensional array.
*
* @private
* @param {NonNegativeInteger} M - input array length
* @param {NonNegativeInteger} N - output array length
* @throws {Error} input arrays must be broadcast compatible
* @returns {NonNegativeInteger} stride length
*/
function resolveStride( M, N ) {
	// Note that this effectively in-lines logic from `@stdlib/array/base/broadcast-array` in order to avoid unnecessary object creation...
	if ( M === 1 ) {
		return 0;
	}
	if ( M === N ) {
		return 1;
	}
	throw new Error( 'invalid arguments. Input arguments are not broadcast compatible.' );
}
 
 
// EXPORTS //
 
module.exports = resolveStride;