From 77b752f8ec92773b5dbc437ce66e71f60fed68ea Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Sat, 11 Nov 2017 13:56:41 +0100
Subject: [PATCH] Bin exact float / not working

---
 Stdlib/Base/ExactFloat.php | 97 +++-----------------------------------
 1 file changed, 6 insertions(+), 91 deletions(-)

diff --git a/Stdlib/Base/ExactFloat.php b/Stdlib/Base/ExactFloat.php
index 72046d5fe..7627ddbba 100644
--- a/Stdlib/Base/ExactFloat.php
+++ b/Stdlib/Base/ExactFloat.php
@@ -17,101 +17,16 @@ namespace phpOMS\Stdlib\Base;
 
 class ExactFloat
 {
-
-    private static $length = 0;
-
-    public static function setLength($length) /* : void */
-    {
-        self::$length = (int) $length;
-    }
-
     public static function sum($a, $b, $length = null)
     {
-        $length  = $length ?? self::$length;
-        $split_a = explode('.', $a) + ['0', '0'];
-        $split_b = explode('.', $b) + ['0', '0'];
+    }
 
-        $sign_a   = '+';
-        $sign_b   = '+';
-        $sign_sum = '';
+    public static function add($a, $b, $length = null)
+    {
+    }
 
-        $decimals    = [0, 0];
-        $decimals[0] = (int) $split_a[0] + (int) $split_b[0];
-
-        /* Get sign and length */
-        $len_a = strlen($split_a[1]);
-
-        if ($a[0] === '-') {
-            $sign_a = '-';
-        }
-
-        $len_b = strlen($split_b[1]);
-
-        if ($b[0] === '-') {
-            $sign_b = '-';
-        }
-
-        /* Pad to same length */
-        $len_max = max($len_a, $len_b);
-
-        $val_a = (int) ($sign_a . str_pad($split_a[1], $len_max, '0'));
-        $val_b = (int) ($sign_b . str_pad($split_b[1], $len_max, '0'));
-
-        $temp_sum = $val_a + $val_b;
-
-        if ($sign_a === '+' && $sign_b === '+') {
-            if (strlen((string) $temp_sum) > $len_max) {
-                $decimals[0]++;
-                $decimals[1] = (int) substr((string) $temp_sum, 1);
-            }
-        } elseif ($sign_a === '+' && $sign_b === '-') {
-            // todo: keep 0.5 in mind maybe decimals0--?!?!?! most likely not
-            if ((int) $split_a[0] > (int) $split_b[0]) {
-                if ($val_a < $val_b) {
-                    $temp_sum = 10 * strlen((string) $temp_sum) - $temp_sum;
-                }
-            } else {
-                if ($val_a > $val_b) {
-                    $temp_sum = 10 * strlen((string) $temp_sum) - $temp_sum;
-                }
-            }
-
-            $decimals[1] = (int) ltrim((string) $temp_sum, '-');
-        } elseif ($sign_a === '-' && $sign_b === '+') {
-            if ((int) $split_a[0] < (int) $split_b[0]) {
-                if ($val_a > $val_b) {
-                    $temp_sum = 10 * strlen((string) $temp_sum) - $temp_sum;
-                }
-            } else {
-                if ($val_a < $val_b) {
-                    $temp_sum = 10 * strlen((string) $temp_sum) - $temp_sum;
-                }
-            }
-
-            $decimals[1] = (int) ltrim((string) $temp_sum, '-');
-        } elseif ($sign_a === '-' && $sign_b === '-') {
-            if (strlen((string) $temp_sum) > $len_max + 1) {
-                $decimals[0]--;
-                $decimals[1] = (int) substr((string) $temp_sum, 2);
-            }
-
-            if ($decimals[0] === 0) {
-                $sign_sum = '-';
-            }
-        }
-
-        /* Too short */
-        $str_sum = str_pad((string) $decimals[1], $length, '0');
-
-        /* Too long */
-        /* TODO: handle rounding, carefull with e.g. 1.99995 -> 2.00 */
-        if ($sign_sum === '-') {
-            $str_sum = substr($str_sum, 0, $length + 1);
-        } else {
-            $str_sum = substr($str_sum, 0, $length);
-        }
-
-        return $sign_sum . $decimals[0] . ($length > 0 ? '.' . $str_sum : '');
+    public static function sub($a, $b, $length = null)
+    {
     }
 
     public static function mult($a, $b, $length = null)