zetsubou/endian.c


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/******************************************************************************\
*  endian.c                                                                    *
*  Part of Zetsubou                                                            *
*  Part of Benzin                                                              *
*  Handles endianness.                                                         *
*  Copyright (c)2009 HACKERCHANNEL Team                                        *
\******************************************************************************/


#include "types.h"
#include "endian.h"

u16 be16(u16 x)
{
	return (x>>8) | 
        (x<<8);
}

u32 be32(u32 x)
{
	return (x>>24) | 
        ((x<<8) & 0x00FF0000) |
        ((x>>8) & 0x0000FF00) |
        (x<<24);
}

// __int64 for MSVC, "long long" for gcc
u64 be64(u64 x)
{
	return (x>>56) | 
        ((x<<40) & (u64)0x00FF000000000000LL) |
        ((x<<24) & (u64)0x0000FF0000000000LL) |
        ((x<<8)  & (u64)0x000000FF00000000LL) |
        ((x>>8)  & (u64)0x00000000FF000000LL) |
        ((x>>24) & (u64)0x0000000000FF0000LL) |
        ((x>>40) & (u64)0x000000000000FF00LL) |
        (x<<56);
}