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<?php class Math { public function __construct(){} static $PI; static $NaN; static $POSITIVE_INFINITY; static $NEGATIVE_INFINITY; static function abs($v) { return abs($v); } static function min($a, $b) { return min($a, $b); } static function max($a, $b) { return max($a, $b); } static function sin($v) { return sin($v); } static function cos($v) { return cos($v); } static function atan2($y, $x) { return atan2($y, $x); } static function tan($v) { return tan($v); } static function exp($v) { return exp($v); } static function log($v) { return log($v); } static function sqrt($v) { return sqrt($v); } static function round($v) { return (int) floor($v + 0.5); } static function floor($v) { return (int) floor($v); } static function ceil($v) { return (int) ceil($v); } static function atan($v) { return atan($v); } static function asin($v) { return asin($v); } static function acos($v) { return acos($v); } static function pow($v, $exp) { return pow($v, $exp); } static function random() { return mt_rand() / mt_getrandmax(); } static function isNaN($f) { return is_nan($f); } static function isFinite($f) { return is_finite($f); } function __toString() { return 'Math'; } } { Math::$PI = M_PI; Math::$NaN = acos(1.01); Math::$NEGATIVE_INFINITY = log(0); Math::$POSITIVE_INFINITY = -Math::$NEGATIVE_INFINITY; }