MdePkg/Library/BaseLib/RShiftU64.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 right between 0 and 63 bits. This high bits are
  13   filled with zeros. The shifted value is returned.
  14
  15   This function shifts the 64-bit value Operand to the right by Count bits. The
  16   high 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 right.
  21   @param  Count   The number of bits to shift right.
  22
  23   @return Operand >> Count.
  24
  25 **/
  26 UINT64
  27 EFIAPI
  28 RShiftU64 (
  29   IN      UINT64  Operand,
  30   IN      UINTN   Count
  31   )
  32 {
  33   ASSERT (Count < 64);
  34   return InternalMathRShiftU64 (Operand, Count);
  35 }