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Compute the absolute value and phase of a double-precision complex floating-point number.
To use in Observable,
cpolar = require( 'https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-cpolar@umd/browser.js' )To vendor stdlib functionality and avoid installing dependency trees for Node.js, you can use the UMD server build:
var cpolar = require( 'path/to/vendor/umd/math-base-special-cpolar/index.js' )To include the bundle in a webpage,
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-cpolar@umd/browser.js"></script>If no recognized module system is present, access bundle contents via the global scope:
<script type="text/javascript">
(function () {
window.cpolar;
})();
</script>Computes the absolute value and phase of a double-precision complex floating-point number.
var Complex128 = require( '@stdlib/complex-float64-ctor' );
var o = cpolar( new Complex128( 5.0, 3.0 ) );
// returns [ ~5.83, ~0.5404 ]Computes the absolute value and phase of a double-precision complex floating-point number and assigns results to a provided output array.
var Complex128 = require( '@stdlib/complex-float64-ctor' );
var Float64Array = require( '@stdlib/array-float64' );
var out = new Float64Array( 2 );
var v = cpolar.assign( new Complex128( 5.0, 3.0 ), out, 1, 0 );
// returns <Float64Array>[ ~5.83, ~0.5404 ]
var bool = ( v === out );
// returns true<!DOCTYPE html>
<html lang="en">
<body>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/complex-float64-ctor@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/random-base-randu@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-round@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/complex-float64-real@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/complex-float64-imag@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-cpolar@umd/browser.js"></script>
<script type="text/javascript">
(function () {
var re;
var im;
var z;
var o;
var i;
for ( i = 0; i < 100; i++ ) {
re = round( randu()*100.0 ) - 50.0;
im = round( randu()*100.0 ) - 50.0;
z = new Complex128( re, im );
o = cpolar( z );
z = z.toString();
console.log( 'abs(%s) = %d. arg(%s) = %d', z, o[0], z, o[1] );
}
})();
</script>
</body>
</html>@stdlib/math-base/special/cabs: compute the absolute value of a double-precision complex floating-point number.@stdlib/math-base/special/cphase: compute the argument of a double-precision complex floating-point number in radians.
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
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