time-to-botec

Benchmark sampling in different programming languages
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main.js (2128B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 'use strict';
     20 
     21 // MODULES //
     22 
     23 var isCollection = require( '@stdlib/assert/is-collection' );
     24 var getType = require( './../../dtype' );
     25 var ctors = require( './../../ctors' );
     26 
     27 
     28 // MAIN //
     29 
     30 /**
     31 * Converts an array to the same data type as a second input array.
     32 *
     33 * @param {Collection} x - array to convert
     34 * @param {(Array|TypedArray)} y - array having the desired output data type
     35 * @throws {TypeError} first argument must be an array-like object
     36 * @throws {TypeError} second argument must have a recognized data type
     37 * @returns {(Array|TypedArray)} output array
     38 *
     39 * @example
     40 * var Float64Array = require( '@stdlib/array/float64' );
     41 *
     42 * var y = new Float64Array( 0 );
     43 *
     44 * var x = [ 1.0, 2.0, 3.0, 4.0 ];
     45 * var out = convertSame( x, y );
     46 * // returns <Float64Array>[ 1.0, 2.0, 3.0, 4.0 ]
     47 */
     48 function convertSame( x, y ) {
     49 	var dtype;
     50 	var ctor;
     51 	var out;
     52 	var len;
     53 	var i;
     54 	if ( !isCollection( x ) ) {
     55 		throw new TypeError( 'invalid argument. First argument must be an array-like object. Value: `' + x + '`.' );
     56 	}
     57 	dtype = getType( y );
     58 	ctor = ctors( dtype );
     59 	if ( ctor === null ) {
     60 		throw new TypeError( 'invalid argument. Second argument must have a recognized data type. Value: `' + dtype + '`.' );
     61 	}
     62 	len = x.length;
     63 	if ( dtype === 'generic' ) {
     64 		out = [];
     65 		for ( i = 0; i < len; i++ ) {
     66 			out.push( x[ i ] ); // ensure "fast" elements
     67 		}
     68 		return out;
     69 	}
     70 	out = new ctor( len );
     71 	for ( i = 0; i < len; i++ ) {
     72 		out[ i ] = x[ i ];
     73 	}
     74 	return out;
     75 }
     76 
     77 
     78 // EXPORTS //
     79 
     80 module.exports = convertSame;