From 269a0680324f2607b2e864abaee70290aaf46a3a Mon Sep 17 00:00:00 2001
From: Oskar Linde <oskar.linde@gmail.com>
Date: Tue, 24 Jun 2014 14:31:15 +0200
Subject: [PATCH] Fix lcd itostr3() to handle negative numbers

---
 Marlin/ultralcd.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Marlin/ultralcd.cpp b/Marlin/ultralcd.cpp
index f09dd410d..39fcee80d 100644
--- a/Marlin/ultralcd.cpp
+++ b/Marlin/ultralcd.cpp
@@ -1489,9 +1489,13 @@ char *itostr31(const int &xx)
   return conv;
 }
 
-char *itostr3(const int &xx)
+char *itostr3(const int &x)
 {
-  if (xx >= 100)
+  int xx = x;
+  if (xx < 0) {
+     conv[0]='-';
+     xx = -xx;
+  } else if (xx >= 100)
     conv[0]=(xx/100)%10+'0';
   else
     conv[0]=' ';