From aecb339307580896130b932900f0c56b8b000398 Mon Sep 17 00:00:00 2001
From: Kyle Temkin <ktemkin@binghamton.edu>
Date: Thu, 22 Sep 2011 12:11:49 +0100
Subject: [PATCH] MDL-28202 qtype_calculated fix edge case in the rounding
 code.

---
 question/type/calculated/questiontype.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/question/type/calculated/questiontype.php b/question/type/calculated/questiontype.php
index 6be1bbe1365..4c450d4b24b 100644
--- a/question/type/calculated/questiontype.php
+++ b/question/type/calculated/questiontype.php
@@ -1893,6 +1893,12 @@ function qtype_calculated_calculate_answer($formula, $individualdata,
         // ... and have the answer rounded of to the correct length
         $answer = round($answer, $answerlength);
 
+        //if we rounded up to 1.0, place the answer back into 0.[1-9][0-9]* format
+        if ($answer >= 1) {
+            ++$p10;
+            $answer /= 10;
+        }
+
         // Have the answer written on a suitable format,
         // Either scientific or plain numeric
         if (-2 > $p10 || 4 < $p10) {