From 4748b24d77d65a13dd2bcb0f9fa9ed83f24f9bf4 Mon Sep 17 00:00:00 2001
From: vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 11 Jul 2006 07:48:43 +0000
Subject: [PATCH] 1. Fix one bug on EBC for GetPowerOfTwo64.c 2. Fix one bug
 for GetPowerOfTwo32.c and GetPowerOfTwo64.c, when Operand is 1, 1 should be
 returned

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@873 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Library/BaseLib/GetPowerOfTwo32.c | 5 +++--
 MdePkg/Library/BaseLib/GetPowerOfTwo64.c | 3 ++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/MdePkg/Library/BaseLib/GetPowerOfTwo32.c b/MdePkg/Library/BaseLib/GetPowerOfTwo32.c
index 6dfe8056b4..dbf4ca6513 100644
--- a/MdePkg/Library/BaseLib/GetPowerOfTwo32.c
+++ b/MdePkg/Library/BaseLib/GetPowerOfTwo32.c
@@ -34,6 +34,7 @@ GetPowerOfTwo32 (
   )
 {
   INTN                              BitPos;
-
-  return (BitPos = HighBitSet32 (Operand)) > 0 ? 1ul << BitPos : 0;
+  
+  BitPos = HighBitSet32 (Operand);
+  return BitPos >= 0 ? 1ul << BitPos : 0;
 }
diff --git a/MdePkg/Library/BaseLib/GetPowerOfTwo64.c b/MdePkg/Library/BaseLib/GetPowerOfTwo64.c
index 9994fb8f12..8372a7f136 100644
--- a/MdePkg/Library/BaseLib/GetPowerOfTwo64.c
+++ b/MdePkg/Library/BaseLib/GetPowerOfTwo64.c
@@ -35,5 +35,6 @@ GetPowerOfTwo64 (
 {
   INTN                              BitPos;
 
-  return (BitPos = HighBitSet64 (Operand)) > 0 ? LShiftU64 (1, BitPos) : 0;
+  BitPos = HighBitSet64 (Operand);
+  return BitPos >= 0 ? LShiftU64 (1, BitPos) : 0;
 }