mirror of https://github.com/acidanthera/audk.git
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
|
/** @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));
|
||
|
|
}
|