Press n or j to go to the next uncovered block, b, p or k for the previous block.
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* @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 accessors = require( './accessors.js' );
// MAIN //
/**
* Cumulatively tests whether every element in a strided array is truthy using alternative indexing semantics.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {Collection} x - input array
* @param {integer} strideX - stride length for `x`
* @param {NonNegativeInteger} offsetX - starting index for `x`
* @param {Collection} out - output array
* @param {integer} strideOut - stride length for `out`
* @param {NonNegativeInteger} offsetOut - starting index for `out`
* @returns {Collection} output array
*
* @example
* var x = [ 1, 1, 0, 0 ];
* var out = [ false, false, false, false ];
*
* gcuevery( 4, x, 1, 0, out, 1, 0 );
* // out => [ true, true, false, false ]
*/
function gcuevery( N, x, strideX, offsetX, out, strideOut, offsetOut ) {
var flg;
var ox;
var oo;
var ix;
var io;
var i;
if ( N <= 0 ) {
return out;
}
ox = arraylike2object( x );
oo = arraylike2object( out );
if ( ox.accessorProtocol || oo.accessorProtocol ) {
accessors( N, ox, strideX, offsetX, oo, strideOut, offsetOut );
return out;
}
flg = true;
ix = offsetX;
io = offsetOut;
for ( i = 0; i < N; i++ ) {
if ( flg && !x[ ix ] ) {
flg = false;
}
out[ io ] = flg;
ix += strideX;
io += strideOut;
}
return out;
}
// EXPORTS //
module.exports = gcuevery;
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