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Remove obsolete math polyfills

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Adrien Crivelli 2017-02-16 11:15:22 +09:00
parent 4ae95e5f7c
commit 1a52e23f08
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1 changed files with 0 additions and 26 deletions
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src/PhpSpreadsheet/Calculation/Functions.php
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@ -673,32 +673,6 @@ class Functions
}
}
//
// There are a few mathematical functions that aren't available on all versions of PHP for all platforms
// These functions aren't available in Windows implementations of PHP prior to version 5.3.0
// So we test if they do exist for this version of PHP/operating platform; and if not we create them
//
if (!function_exists('acosh')) {
function acosh($x)
{
return 2 * log(sqrt(($x + 1) / 2) + sqrt(($x - 1) / 2));
} // function acosh()
}
if (!function_exists('asinh')) {
function asinh($x)
{
return log($x + sqrt(1 + $x * $x));
} // function asinh()
}
if (!function_exists('atanh')) {
function atanh($x)
{
return (log(1 + $x) - log(1 - $x)) / 2;
} // function atanh()
}
//
// Strangely, PHP doesn't have a mb_str_replace multibyte function
// As we'll only ever use this function with UTF-8 characters, we can simply "hard-code" the character set