time-to-botec/squiggle/node_modules/@stdlib/complex/reim/lib/reim.js

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/**
* @license Apache-2.0
*
* Copyright (c) 2018 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 Float64Array = require( '@stdlib/array/float64' );
var Float32Array = require( '@stdlib/array/float32' );
// MAIN //
/**
* Returns the real and imaginary components of a complex number.
*
* @param {Complex} z - complex number
* @returns {(Float64Array|Float32Array)} real and imaginary components
*
* @example
* var Complex128 = require( '@stdlib/complex/float64' );
*
* var z = new Complex128( 5.0, 3.0 );
*
* var out = reim( z );
* // returns <Float64Array>[ 5.0, 3.0 ]
*
* @example
* var Complex64 = require( '@stdlib/complex/float32' );
*
* var z = new Complex64( 5.0, 3.0 );
*
* var out = reim( z );
* // returns <Float32Array>[ 5.0, 3.0 ]
*/
function reim( z ) {
var out;
if ( z.BYTES_PER_ELEMENT === 4 ) {
out = new Float32Array( 2 );
} else {
out = new Float64Array( 2 );
}
out[ 0 ] = z.re;
out[ 1 ] = z.im;
return out;
}
// EXPORTS //
module.exports = reim;