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author | Anton Luka Šijanec <anton@sijanec.eu> | 2024-05-27 13:08:29 +0200 |
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committer | Anton Luka Šijanec <anton@sijanec.eu> | 2024-05-27 13:08:29 +0200 |
commit | 75160b12821f7f4299cce7f0b69c83c1502ae071 (patch) | |
tree | 27e25e4ccaef45f0c58b22831164050d1af1d4db /vendor/markbaker/complex/classes/src/functions/atanh.php | |
parent | prvi-commit (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | vendor/markbaker/complex/classes/src/functions/atanh.php | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/vendor/markbaker/complex/classes/src/functions/atanh.php b/vendor/markbaker/complex/classes/src/functions/atanh.php new file mode 100644 index 0000000..d1e60e6 --- /dev/null +++ b/vendor/markbaker/complex/classes/src/functions/atanh.php @@ -0,0 +1,40 @@ +<?php
+
+/**
+ *
+ * Function code for the complex atanh() 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 tangent of a complex number.
+ *
+ * @param Complex|mixed $complex Complex number or a numeric value.
+ * @return Complex The inverse hyperbolic tangent of the complex argument.
+ * @throws Exception If argument isn't a valid real or complex number.
+ */
+if (!function_exists(__NAMESPACE__ . '\\atanh')) {
+ function atanh($complex): Complex
+ {
+ $complex = Complex::validateComplexArgument($complex);
+
+ if ($complex->isReal()) {
+ $real = $complex->getReal();
+ if ($real >= -1.0 && $real <= 1.0) {
+ return new Complex(\atanh($real));
+ } else {
+ return new Complex(\atanh(1 / $real), (($real < 0.0) ? M_PI_2 : -1 * M_PI_2));
+ }
+ }
+
+ $iComplex = clone $complex;
+ $iComplex = $iComplex->invertImaginary()
+ ->reverse();
+ return atan($iComplex)
+ ->invertReal()
+ ->reverse();
+ }
+}
|