1 files changed, 42 insertions, 0 deletions
diff --git a/OldMdePkg/Library/BaseLib/LRotU32.c b/OldMdePkg/Library/BaseLib/LRotU32.c
new file mode 100644
index 0000000000..ea782463d0
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/LRotU32.c
@@ -0,0 +1,42 @@
+/** @file
+  Math worker functions.
+
+  Copyright (c) 2006, Intel Corporation<BR>
+  All rights reserved. This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "BaseLibInternals.h"
+
+/**
+  Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits
+  with the high bits that were rotated.
+
+  This function rotates the 32-bit value Operand to the left by Count bits. The
+  low Count bits are fill with the high Count bits of Operand. The rotated
+  value is returned.
+
+  If Count is greater than 31, then ASSERT().
+
+  @param  Operand The 32-bit operand to rotate left.
+  @param  Count   The number of bits to rotate left.
+
+  @return Operand <<< Count
+
+**/
+UINT32
+EFIAPI
+LRotU32 (
+  IN      UINT32                    Operand,
+  IN      UINTN                     Count
+  )
+{
+  ASSERT (Count < sizeof (Operand) * 8);
+  return (Operand << Count) | (Operand >> (32 - Count));
+}