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* @license Apache-2.0
*
* Copyright (c) 2025 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 //
/**
* Returns the first index of a specified search element in a strided array.
*
* ## Notes
*
* - If the function is unable to find a search element, the function returns `-1`.
*
* @private
* @param {PositiveInteger} N - number of indexed elements
* @param {*} searchElement - search element
* @param {Object} x - input array object
* @param {Collection} x.data - input array data
* @param {Array<Function>} x.accessors - array element accessors
* @param {integer} strideX - stride length
* @param {NonNegativeInteger} offsetX - starting index
* @returns {integer} index
*
* @example
* var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
* var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
*
* var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
*
* var idx = gindexOf( x.length, 3.0, arraylike2object( toAccessorArray( x ) ), 1, 0 );
* // returns 2
*/
function gindexOf( N, searchElement, x, strideX, offsetX ) {
var xbuf;
var get;
var ix;
var i;
// Cache reference to array data:
xbuf = x.data;
// Cache a reference to the element accessors:
get = x.accessors[ 0 ];
ix = offsetX;
for ( i = 0; i < N; i++ ) {
if ( get( xbuf, ix ) === searchElement ) {
return i;
}
ix += strideX;
}
return -1;
}
// EXPORTS //
module.exports = gindexOf;
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