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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 62x 62x 62x 62x 62x 20x 20x 62x 23x 14x 14x 9x 9x 62x 19x 8x 8x 11x 11x 11x 62x 2x 2x 18x 62x 2x 2x 2x 2x 2x | /**
* @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 isLayout = require( '@stdlib/blas/base/assert/is-layout' );
var isColumnMajor = require( '@stdlib/ndarray/base/assert/is-column-major-string' );
var stride2offset = require( '@stdlib/strided/base/stride2offset' );
var max = require( '@stdlib/math/base/special/fast/max' );
var format = require( '@stdlib/string/format' );
var base = require( './base.js' );
// MAIN //
/**
* Computes the Cartesian square for a strided array.
*
* @param {string} order - storage layout
* @param {NonNegativeInteger} N - number of indexed elements
* @param {NumericArray} x - input array
* @param {integer} strideX - stride length for `x`
* @param {NumericArray} out - output array
* @param {integer} LDO - stride length between successive contiguous vectors of the matrix `out` (a.k.a., leading dimension of `out`)
* @throws {TypeError} first argument must be a valid order
* @throws {RangeError} sixth argument must be a valid stride length
* @returns {NumericArray} output array
*
* @example
* var x = [ 1.0, 2.0 ];
* var out = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ];
*
* gcartesianSquare( 'row-major', x.length, x, 1, out, 2 );
* // out => [ 1.0, 1.0, 1.0, 2.0, 2.0, 1.0, 2.0, 2.0 ]
*/
function gcartesianSquare( order, N, x, strideX, out, LDO ) {
var sa1;
var sa2;
if ( !isLayout( order ) ) {
throw new TypeError( format( 'invalid argument. First argument must be a valid order. Value: `%s`.', order ) );
}
if ( isColumnMajor( order ) ) {
if ( LDO < max( 1, N*N ) ) {
throw new RangeError( format( 'invalid argument. Sixth argument must be greater than or equal to max(1,%d). Value: `%d`.', N*N, LDO ) );
}
sa1 = 1;
sa2 = LDO;
} else { // order === 'row-major'
if ( LDO < 2 ) {
throw new RangeError( format( 'invalid argument. Sixth argument must be greater than or equal to max(1,%d). Value: `%d`.', 2, LDO ) );
}
sa1 = LDO;
sa2 = 1;
}
if ( N <= 0 ) {
return out;
}
return base( N, x, strideX, stride2offset( N, strideX ), out, sa1, sa2, 0 );
}
// EXPORTS //
module.exports = gcartesianSquare;
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