130 lines
No EOL
2.8 KiB
PHP
130 lines
No EOL
2.8 KiB
PHP
<?php
|
|
|
|
class Math
|
|
{
|
|
const DEFAULT_PRECISTION = 0;
|
|
|
|
protected static $_singleton = null;
|
|
|
|
public static function setPrecision($precision = null)
|
|
{
|
|
if ($precision === null) {
|
|
$precision = self::DEFAULT_PRECISTION;
|
|
}
|
|
|
|
self::getSingleton()->setPrecision($precision);
|
|
}
|
|
|
|
public static function getSingleton()
|
|
{
|
|
if (self::$_singleton === null) {
|
|
if (extension_loaded('bcmath')) {
|
|
self::$_singleton = new Math_Bcmath();
|
|
} else {
|
|
self::$_singleton = new Math_Native();
|
|
}
|
|
}
|
|
return self::$_singleton;
|
|
}
|
|
|
|
public static function add($a, $b)
|
|
{
|
|
return self::getSingleton()->add($a, $b);
|
|
}
|
|
|
|
public static function sub($a, $b)
|
|
{
|
|
return self::getSingleton()->sub($a, $b);
|
|
}
|
|
|
|
public static function mul($a, $b)
|
|
{
|
|
return self::getSingleton()->mul($a, $b);
|
|
}
|
|
|
|
public static function div($a, $b)
|
|
{
|
|
return self::getSingleton()->div($a, $b);
|
|
}
|
|
|
|
public static function comp($a, $b)
|
|
{
|
|
return self::getSingleton()->comp($a, $b);
|
|
}
|
|
|
|
public static function pow($a, $b)
|
|
{
|
|
return self::getSingleton()->pow($a, $b);
|
|
}
|
|
|
|
public static function mod($a, $b)
|
|
{
|
|
return self::getSingleton()->mod($a, $b);
|
|
}
|
|
|
|
public static function ceil($a)
|
|
{
|
|
return self::getSingleton()->ceil($a);
|
|
}
|
|
|
|
public static function floor($a)
|
|
{
|
|
return self::getSingleton()->floor($a);
|
|
}
|
|
|
|
public static function round($a, $range = 0)
|
|
{
|
|
return self::getSingleton()->round($a, $range);
|
|
}
|
|
|
|
public static function render($a)
|
|
{
|
|
return self::getSingleton()->render($a);
|
|
}
|
|
|
|
public static function isNegative($a)
|
|
{
|
|
return (bool) (self::getSingleton()->comp($a, 0) < 0);
|
|
}
|
|
|
|
public static function isPositive($a)
|
|
{
|
|
return (bool) (self::getSingleton()->comp($a, 0) > 0);
|
|
}
|
|
|
|
public static function isNegativeOrZero($a)
|
|
{
|
|
return (bool) (self::getSingleton()->comp($a, 0) <= 0);
|
|
}
|
|
|
|
public static function isPositiveOrZero($a)
|
|
{
|
|
return (bool) (self::getSingleton()->comp($a, 0) >= 0);
|
|
}
|
|
|
|
public static function isZero($a)
|
|
{
|
|
return (bool) (self::getSingleton()->comp($a, 0) == 0);
|
|
}
|
|
|
|
public static function isNotZero($a)
|
|
{
|
|
return (bool) (self::getSingleton()->comp($a, 0) != 0);
|
|
}
|
|
|
|
public static function min($a, $b)
|
|
{
|
|
if (self::getSingleton()->comp($a, $b) > 0) {
|
|
return $b;
|
|
}
|
|
return $a;
|
|
}
|
|
|
|
public static function max($a, $b)
|
|
{
|
|
if (self::getSingleton()->comp($a, $b) < 0) {
|
|
return $b;
|
|
}
|
|
return $a;
|
|
}
|
|
} |