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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 dtypes = require( '@stdlib/ndarray/dtypes' );
var gcopyWithin = require( '@stdlib/blas/ext/base/ndarray/gcopy-within' );
var dcopyWithin = require( '@stdlib/blas/ext/base/ndarray/dcopy-within' );
var scopyWithin = require( '@stdlib/blas/ext/base/ndarray/scopy-within' );
var zcopyWithin = require( '@stdlib/blas/ext/base/ndarray/zcopy-within' );
var ccopyWithin = require( '@stdlib/blas/ext/base/ndarray/ccopy-within' );
var factory = require( '@stdlib/ndarray/base/nullary-strided1d-dispatch-factory' );
// VARIABLES //
var idtypes0 = dtypes( 'integer_index_and_generic' ); // target/start/end ndarrays
var idtypes1 = dtypes( 'all' ); // workspace ndarray
var odtypes = dtypes( 'all' );
var table = {
'types': [
'float64', // input/output
'float32', // input/output
'complex128', // input/output
'complex64' // input/output
],
'fcns': [
dcopyWithin,
scopyWithin,
zcopyWithin,
ccopyWithin
],
'default': gcopyWithin
};
var options = {
'strictTraversalOrder': true
};
// MAIN //
/**
* Performs an in-place copy of elements within an ndarray along an ndarray dimension.
*
* @private
* @name copyWithin
* @type {Function}
* @param {ndarray} x - input ndarray
* @param {ndarray} target - ndarray containing the target index
* @param {ndarray} start - ndarray containing the source start index (inclusive)
* @param {ndarray} end - ndarray containing the source end index (exclusive)
* @param {ndarray} workspace - workspace ndarray
* @param {Options} [options] - function options
* @param {IntegerArray} [options.dims] - list of dimensions over which to perform operation
* @throws {TypeError} first argument must be an ndarray-like object
* @throws {TypeError} index arguments must be ndarray-like objects
* @throws {TypeError} workspace argument must be an ndarray-like object
* @throws {TypeError} options argument must be an object
* @throws {RangeError} dimension indices must not exceed input ndarray bounds
* @throws {Error} must provide valid options
* @returns {ndarray} input ndarray
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
* var zeros = require( '@stdlib/ndarray/zeros' );
* var ndarray = require( '@stdlib/ndarray/ctor' );
*
* // Create a data buffer:
* var xbuf = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ] );
*
* // Define the shape of the input array:
* var sh = [ 6 ];
*
* // Define the array strides:
* var sx = [ 1 ];
*
* // Define the index offset:
* var ox = 0;
*
* // Create an input ndarray:
* var x = new ndarray( 'float64', xbuf, sh, sx, ox, 'row-major' );
*
* // Create ndarrays containing the target, start, and end indices:
* var opts = {
* 'dtype': 'int32'
* };
* var target = scalar2ndarray( 3, opts );
* var start = scalar2ndarray( 1, opts );
* var end = scalar2ndarray( 4, opts );
*
* // Create a workspace ndarray:
* var w = zeros( [ 6 ], {
* 'dtype': 'float64'
* });
*
* // Perform operation:
* var out = copyWithin( x, target, start, end, w, {
* 'dims': [ 0 ]
* });
* // returns <ndarray>[ 1.0, 2.0, 3.0, 2.0, 3.0, 4.0 ]
*
* var bool = ( out === x );
* // returns true
*/
var copyWithin = factory( table, [ idtypes0, idtypes0, idtypes0, idtypes1 ], odtypes, options ); // eslint-disable-line max-len
// EXPORTS //
module.exports = copyWithin;
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