UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / MdePkg / Library / BaseLib / GetPowerOfTwo32.c

/** @file\r
  Math worker functions.\r
\r
  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "BaseLibInternals.h"\r
\r
/**\r
  Returns the value of the highest bit set in a 32-bit value. Equivalent to\r
  1 << log2(x).\r
\r
  This function computes the value of the highest bit set in the 32-bit value\r
  specified by Operand. If Operand is zero, then zero is returned.\r
\r
  @param  Operand The 32-bit operand to evaluate.\r
\r
  @return 1 << HighBitSet32(Operand)\r
  @retval 0 Operand is zero.\r
\r
**/\r
UINT32\r
EFIAPI\r
GetPowerOfTwo32 (\r
  IN      UINT32  Operand\r
  )\r
{\r
  if (0 == Operand) {\r
    return 0;\r
  }\r
\r
  return 1ul << HighBitSet32 (Operand);\r
}\r