new appraoch

pancake/system/vendor/moneyphp/money/src/Calculator.php

@@ -0,0 +1,127 @@
+<?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);
+}