MdePkg/Library/BaseLib/LShiftU64.c

   1 /** @file
   2   Math worker functions.
   3
   4   Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include "BaseLibInternals.h"
  10
  11 /**
  12   Shifts a 64-bit integer left between 0 and 63 bits. The low bits are filled
  13   with zeros. The shifted value is returned.
  14
  15   This function shifts the 64-bit value Operand to the left by Count bits. The
  16   low Count bits are set to zero. The shifted value is returned.
  17
  18   If Count is greater than 63, then ASSERT().
  19
  20   @param  Operand The 64-bit operand to shift left.
  21   @param  Count   The number of bits to shift left.
  22
  23   @return Operand << Count.
  24
  25 **/
  26 UINT64
  27 EFIAPI
  28 LShiftU64 (
  29   IN      UINT64  Operand,
  30   IN      UINTN   Count
  31   )
  32 {
  33   ASSERT (Count < 64);
  34   return InternalMathLShiftU64 (Operand, Count);
  35 }