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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';
// MODULES //
var isndarrayLike = require( '@stdlib/assert/is-ndarray-like' );
var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
var getDType = require( '@stdlib/ndarray/dtype' );
var ndims = require( '@stdlib/ndarray/ndims' );
var concat1d = require( '@stdlib/ndarray/concat1d' ).assign;
var format = require( '@stdlib/string/format' );
// MAIN //
/**
* Appends provided scalar values to a one-dimensional input ndarray and assigns the result to a one-dimensional output ndarray.
*
* @param {ndarrayLike} x - input ndarray
* @param {...*} values - scalar values
* @param {ndarrayLike} out - output ndarray
* @throws {Error} must provide at least three arguments
* @throws {TypeError} first argument must be a one-dimensional ndarray
* @throws {TypeError} last argument must be a one-dimensional ndarray
* @returns {ndarray} output ndarray
*
* @example
* var array = require( '@stdlib/ndarray/array' );
* var zeros = require( '@stdlib/ndarray/zeros' );
*
* var x = array( [ 1.0, 2.0, 3.0, 4.0 ] );
* var y = zeros( [ 7 ] );
*
* var out = assign( x, 5.0, 6.0, 7.0, y );
* // returns <ndarray>[ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 ]
*
* var bool = ( out === y );
* // returns true
*/
function assign( x ) {
var nargs;
var dtype;
var args;
var out;
var i;
if ( !isndarrayLike( x ) || ndims( x ) !== 1 ) {
throw new TypeError( format( 'invalid argument. First argument must be a one-dimensional ndarray. Value: `%s`.', x ) );
}
nargs = arguments.length;
if ( nargs < 3 ) {
throw new Error( 'invalid invocation. Must provide at least three arguments.' );
}
out = arguments[ nargs-1 ];
if ( !isndarrayLike( out ) || ndims( out ) !== 1 ) {
throw new TypeError( format( 'invalid argument. Last argument must be a one-dimensional ndarray. Value: `%s`.', out ) );
}
dtype = getDType( x );
args = [ x ];
for ( i = 1; i < nargs-1; i++ ) {
args.push( scalar2ndarray( arguments[ i ], {
'dtype': dtype
}));
}
return concat1d( args, out );
}
// EXPORTS //
module.exports = assign;
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