From 13eb510baf70be80afbad8473c6992b5a5119e99 Mon Sep 17 00:00:00 2001
From: Paul Gilbert
Date: Thu, 15 Jul 2010 10:00:32 +0000
Subject: Bugfix to the SqrtF16 function to work correctly

svn-id: r50912
---
 engines/m4/rails.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/engines/m4/rails.cpp b/engines/m4/rails.cpp
index fbad6995eb..11b9bcdbb9 100644
--- a/engines/m4/rails.cpp
+++ b/engines/m4/rails.cpp
@@ -179,7 +179,7 @@ long SqrtF16(long n) {
 	uint32 r = 0, s;
 	uint32 v = (uint32)n;
 
-	for (int i = 15; i <= 0; i--) {
+	for (int i = 15; i >= 0; --i) {
 		s = r + (1L << i * 2);
 		r >>= 1;
 		if (s <= v) {
-- 
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