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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 isnan = require( '@stdlib/math/base/assert/is-nan' );
var reinterpretBoolean = require( '@stdlib/strided/base/reinterpret-boolean' );
var reinterpret = require( '@stdlib/strided/base/reinterpret-complex64' );
// MAIN //
/**
* Cumulatively tests whether at least `k` elements in a single-precision complex floating-point strided array are truthy using alternative indexing semantics.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {integer} k - minimum number of truthy elements
* @param {Complex64Array} x - input array
* @param {integer} strideX - stride length for `x`
* @param {NonNegativeInteger} offsetX - starting index for `x`
* @param {BooleanArray} out - output array
* @param {integer} strideOut - stride length for `out`
* @param {NonNegativeInteger} offsetOut - starting index for `out`
* @returns {BooleanArray} output array
*
* @example
* var Complex64Array = require( '@stdlib/array/complex64' );
* var BooleanArray = require( '@stdlib/array/bool' );
*
* var x = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 ] );
* var out = new BooleanArray( 4 );
*
* ccusome( 4, 2, x, 1, 0, out, 1, 0 );
* // out => <BooleanArray>[ false, false, false, true ]
*/
function ccusome( N, k, x, strideX, offsetX, out, strideOut, offsetOut ) {
var view;
var obuf;
var flg;
var cnt;
var sx;
var ox;
var io;
var i;
if ( N <= 0 ) {
return out;
}
view = reinterpret( x, 0 );
obuf = reinterpretBoolean( out, 0 );
sx = strideX * 2;
ox = offsetX * 2;
flg = false;
cnt = k;
io = offsetOut;
for ( i = 0; i < N; i++ ) {
if ( !flg && ( ( view[ ox ] !== 0 && !isnan( view[ ox ] ) ) || ( view[ ox+1 ] !== 0 && !isnan( view[ ox+1 ] ) ) ) ) { // eslint-disable-line max-len
cnt -= 1;
if ( cnt <= 0 ) {
flg = true;
}
}
obuf[ io ] = flg;
ox += sx;
io += strideOut;
}
return out;
}
// EXPORTS //
module.exports = ccusome;
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