当前路径:vendor/markbaker/complex/classes/src/functions/acosh.php <?php /** * * Function code for the complex acosh() function * * @copyright Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex) * @license https://opensource.org/licenses/MIT MIT */ namespace Complex; /** * Returns the inverse hyperbolic cosine of a complex number. * * @param Complex|mixed $complex Complex number or a numeric value. * @return Complex The inverse hyperbolic cosine of the complex argument. * @throws Exception If argument isn't a valid real or complex number. */ function acosh($complex) { $complex = Complex::validateComplexArgument($complex); if ($complex->isReal() && ($complex->getReal() > 1)) { return new Complex(\acosh($complex->getReal())); } $acosh = acos($complex) ->reverse(); if ($acosh->getReal() < 0.0) { $acosh = $acosh->invertReal(); } return $acosh; }
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