updated-packages

vendor/markbaker/complex/classes/src/functions/asinh.php

@@ -0,0 +1,35 @@
+<?php
+
+/**
+ *
+ * Function code for the complex asinh() 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 sine of a complex number.
+ *
+ * @param     Complex|mixed    $complex    Complex number or a numeric value.
+ * @return    Complex          The inverse hyperbolic sine of the complex argument.
+ * @throws    Exception        If argument isn't a valid real or complex number.
+ */
+if (!function_exists(__NAMESPACE__ . '\\asinh')) {
+    function asinh($complex): Complex
+    {
+        $complex = Complex::validateComplexArgument($complex);
+
+        if ($complex->isReal() && ($complex->getReal() > 1)) {
+            return new Complex(\asinh($complex->getReal()));
+        }
+
+        $asinh = clone $complex;
+        $asinh = $asinh->reverse()
+            ->invertReal();
+        $asinh = asin($asinh);
+        return $asinh->reverse()
+            ->invertImaginary();
+    }
+}