From 2784b982782a732ad258bb53572852c058d6d91e Mon Sep 17 00:00:00 2001
From: thepurpleblob <thepurpleblob>
Date: Thu, 13 Apr 2006 10:29:20 +0000
Subject: [PATCH] Don't compare floats for equality! Bug #5176

---
 lib/questionlib.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/questionlib.php b/lib/questionlib.php
index 90f6b22863..75a044a454 100644
--- a/lib/questionlib.php
+++ b/lib/questionlib.php
@@ -260,7 +260,8 @@ function match_grade_options($gradeoptionsfull, $grade, $matchgrades='error') {
     // if we just need an error...
     if ($matchgrades=='error') {
         foreach($gradeoptionsfull as $value => $option) {
-            if ($grade==$value) {
+            // slightly fuzzy test, never check floats for equality :-)
+            if (abs($grade-$value)<0.00001) {
                 return $grade;
             }
         }
-- 
2.39.5