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* @license Apache-2.0
*
* Copyright (c) 2023 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 args2multislice = require( '@stdlib/slice/base/args2multislice' );
var Slice = require( '@stdlib/slice/ctor' );
var filled = require( '@stdlib/array/base/filled' );
var slice = require( '@stdlib/ndarray/base/slice' );
var ndims = require( '@stdlib/ndarray/base/ndims' );
// MAIN //
/**
* Returns a view of an input ndarray in which the order of elements along each dimension is reversed.
*
* @param {ndarray} x - input array
* @param {boolean} writable - boolean indicating whether a returned array should be writable
* @returns {ndarray} ndarray view
*
* @example
* var ndarray = require( '@stdlib/ndarray/ctor' );
* var ndarray2array = require( '@stdlib/ndarray/to-array' );
*
* var buffer = [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ];
* var shape = [ 3, 2 ];
* var strides = [ 2, 1 ];
* var offset = 0;
*
* var x = ndarray( 'generic', buffer, shape, strides, offset, 'row-major' );
* // returns <ndarray>
*
* var sh = x.shape;
* // returns [ 3, 2 ]
*
* var arr = ndarray2array( x );
* // returns [ [ 1.0, 2.0 ], [ 3.0, 4.0 ], [ 5.0, 6.0 ] ]
*
* var y = reverse( x, false );
* // returns <ndarray>
*
* sh = y.shape;
* // returns [ 3, 2 ]
*
* arr = ndarray2array( y );
* // returns [ [ 6.0, 5.0 ], [ 4.0, 3.0 ], [ 2.0, 1.0 ] ]
*/
function reverse( x, writable ) {
var args = filled( new Slice( null, null, -1 ), ndims( x ) );
return slice( x, args2multislice( args ), true, writable );
}
// EXPORTS //
module.exports = reverse;
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