MdePkg/Library/BaseLib/SwapBytes32.c

/** @file
  Math worker functions.

  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "BaseLibInternals.h"

/**
  Switches the endianess of a 32-bit integer.

  This function swaps the bytes in a 32-bit unsigned value to switch the value
  from little endian to big endian or vice versa. The byte swapped value is
  returned.

  @param  Value A 32-bit unsigned value.

  @return The byte swapped Value.

**/
UINT32
EFIAPI
SwapBytes32 (
  IN      UINT32  Value
  )
{
  UINT32  LowerBytes;
  UINT32  HigherBytes;

  LowerBytes  = (UINT32)SwapBytes16 ((UINT16)Value);
  HigherBytes = (UINT32)SwapBytes16 ((UINT16)(Value >> 16));

  return (LowerBytes << 16 | HigherBytes);
}