function _openid_get_math_library

Determine the available math library GMP vs. BCMath, favouring GMP for performance.

File

modules/openid/openid.inc, line 720

Code

function _openid_get_math_library() {
    // Not drupal_static(), because a function is not going to disappear and
    // change the output of this under any circumstances.
    static $library;
    if (empty($library)) {
        if (function_exists('gmp_add')) {
            $library = 'gmp';
        }
        elseif (function_exists('bcadd')) {
            $library = 'bcmath';
        }
    }
    return $library;
}