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<?php
namespace Money;
/**
* Money calculations abstracted away from the Money value object.
*
* @author Frederik Bosch <f.bosch@genkgo.nl>
*/
interface Calculator
{
/**
* Returns whether the calculator is supported in
* the current server environment.
*
* @return bool
*/
public static function supported();
/**
* Compare a to b.
*
* @param string $a
* @param string $b
*
* @return int
*/
public function compare($a, $b);
/**
* Add added to amount.
*
* @param string $amount
* @param string $addend
*
* @return string
*/
public function add($amount, $addend);
/**
* Subtract subtrahend from amount.
*
* @param string $amount
* @param string $subtrahend
*
* @return string
*/
public function subtract($amount, $subtrahend);
/**
* Multiply amount with multiplier.
*
* @param string $amount
* @param int|float|string $multiplier
*
* @return string
*/
public function multiply($amount, $multiplier);
/**
* Divide amount with divisor.
*
* @param string $amount
* @param int|float|string $divisor
*
* @return string
*/
public function divide($amount, $divisor);
/**
* Round number to following integer.
*
* @param string $number
*
* @return string
*/
public function ceil($number);
/**
* Round number to preceding integer.
*
* @param string $number
*
* @return string
*/
public function floor($number);
/**
* Returns the absolute value of the number.
*
* @param string $number
*
* @return string
*/
public function absolute($number);
/**
* Round number, use rounding mode for tie-breaker.
*
* @param int|float|string $number
* @param int $roundingMode
*
* @return string
*/
public function round($number, $roundingMode);
/**
* Share amount among ratio / total portions.
*
* @param string $amount
* @param int|float|string $ratio
* @param int|float|string $total
*
* @return string
*/
public function share($amount, $ratio, $total);
/**
* Get the modulus of an amount.
*
* @param string $amount
* @param int|float|string $divisor
*
* @return string
*/
public function mod($amount, $divisor);
}
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