ln.php

Go to the documentation of this file.

<?php
 
namespace Complex;
 
if (!function_exists(__NAMESPACE__ . '\\ln')) {
    function ln($complex): Complex
    {
        $complex = Complex::validateComplexArgument($complex);
 
        if (($complex->getReal() == 0.0) && ($complex->getImaginary() == 0.0)) {
            throw new \InvalidArgumentException();
        }
 
        return new Complex(
            \log(rho($complex)),
            theta($complex),
            $complex->getSuffix()
        );
    }
}