MultiMC5/java/endian.h

#pragma once
#include <stdint.h>

/**
 * Swap bytes between big endian and local number representation
 */
namespace util
{
#ifdef MULTIMC_BIG_ENDIAN
inline uint64_t bigswap(uint64_t x)
{
	return x;
};
inline uint32_t bigswap(uint32_t x)
{
	return x;
};
inline uint16_t bigswap(uint16_t x)
{
	return x;
};
inline int64_t bigswap(int64_t x)
{
	return x;
};
inline int32_t bigswap(int32_t x)
{
	return x;
};
inline int16_t bigswap(int16_t x)
{
	return x;
};
#else
inline uint64_t bigswap(uint64_t x)
{
	return (x>>56) | ((x<<40) & 0x00FF000000000000) | ((x<<24) & 0x0000FF0000000000) | ((x<<8)  & 0x000000FF00000000) |
			((x>>8)  & 0x00000000FF000000) | ((x>>24) & 0x0000000000FF0000) | ((x>>40) & 0x000000000000FF00) | (x<<56);
};
inline uint32_t bigswap(uint32_t x)
{
	return (x>>24) | ((x<<8) & 0x00FF0000) | ((x>>8) & 0x0000FF00) | (x<<24);
};
inline uint16_t bigswap(uint16_t x)
{
	return (x>>8) | (x<<8);
};
inline int64_t bigswap(int64_t x)
{
	return (x>>56) | ((x<<40) & 0x00FF000000000000) | ((x<<24) & 0x0000FF0000000000) | ((x<<8)  & 0x000000FF00000000) |
			((x>>8)  & 0x00000000FF000000) | ((x>>24) & 0x0000000000FF0000) | ((x>>40) & 0x000000000000FF00) | (x<<56);
};
inline int32_t bigswap(int32_t x)
{
	return (x>>24) | ((x<<8) & 0x00FF0000) | ((x>>8) & 0x0000FF00) | (x<<24);
};
inline int16_t bigswap(int16_t x)
{
	return (x>>8) | (x<<8);
};
#endif
}