common.h

/*

Copyright 2015 Kakaroto

This software is distributed under the terms of the GNU General Public
License ("GPL") version 3, as published by the Free Software Foundation.

*/

#ifndef __COMMON_H__
#define __COMMON_H__

#include <stdio.h>
#include <inttypes.h>

#ifdef WIN32
#define MKDIR(x,y) mkdir(x)
#define U64_FORMAT PRIu64
#else
#define MKDIR(x,y) mkdir(x,y)
#define U64_FORMAT "lu"
#endif

#define noop16(x) (x)
#define noop32(x) (x)
#define noop64(x) (x)

#define swap16(x) ((((uint16_t)(x) & 0xff00) >> 8) | \
                  (((uint16_t)(x) & 0x00ff) << 8))
#define swap32(x) ((((uint32_t)(x) & 0xff000000) >> 24) | \
                  (((uint32_t)(x) & 0x00ff0000) >> 8)  | \
                  (((uint32_t)(x) & 0x0000ff00) << 8)  | \
                  (((uint32_t)(x) & 0x000000ff) << 24))
#define swap64(x) \
     ((((uint64_t)(x) & 0xff00000000000000ull) >> 56)  | \
       ((uint64_t)((x) & 0x00ff000000000000ull) >> 40) | \
       ((uint64_t)((x) & 0x0000ff0000000000ull) >> 24) | \
       ((uint64_t)((x) & 0x000000ff00000000ull) >> 8)  | \
       ((uint64_t)((x) & 0x00000000ff000000ull) << 8)  | \
       ((uint64_t)((x) & 0x0000000000ff0000ull) << 24) | \
       ((uint64_t)((x) & 0x000000000000ff00ull) << 40) | \
       ((uint64_t)((x) & 0x00000000000000ffull) << 56))

#ifdef __BIG_ENDIAN__
#define TO_BE(b, x) noop##b (x)
#define TO_LE(b, x) swap##b (x)
#define FROM_BE(b, x) noop##b (x)
#define FROM_LE(b, x) swap##b (x)
#else
#define TO_BE(b, x) swap##b (x)
#define TO_LE(b, x) noop##b (x)
#define FROM_BE(b, x) swap##b (x)
#define FROM_LE(b, x) noop##b (x)
#endif

#undef DEBUG
//#define DEBUG

#ifdef DEBUG
#define DBG(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#else
#define DBG(...)
#endif

#endif /* __COMMON_H__ */