/*
* Copyright (c) 2008 - 2009
* Jonathan Schleifer <js@webkeks.org>
*
* All rights reserved.
*
* This file is part of libobjfw. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE included in
* the packaging of this file.
*/
#ifndef OF_CONFIGURED
#error You are missing the libobjfw definitions!
#error Please use objfw-config!
#endif
#include <stdint.h>
#ifdef __GNUC__
#define OF_INLINE inline __attribute__((always_inline))
#define OF_LIKELY(cond) __builtin_expect(!!(cond), 1)
#define OF_UNLIKELY(cond) __builtin_expect(!!(cond), 0)
#else
#define OF_INLINE inline
#define OF_LIKELY(cond) cond
#define OF_UNLIKELY(cond) cond
#endif
static OF_INLINE uint16_t
OF_BSWAP16(uint16_t i)
{
i = (i & UINT16_C(0xFF00)) >> 8 |
(i & UINT16_C(0x00FF)) << 8;
return i;
}
static OF_INLINE uint32_t
OF_BSWAP32(uint32_t i)
{
i = (i & UINT32_C(0xFF000000)) >> 24 |
(i & UINT32_C(0x00FF0000)) >> 8 |
(i & UINT32_C(0x0000FF00)) << 8 |
(i & UINT32_C(0x000000FF)) << 24;
return i;
}
static OF_INLINE uint64_t
OF_BSWAP64(uint64_t i)
{
i = (i & UINT64_C(0xFF00000000000000)) >> 56 |
(i & UINT64_C(0x00FF000000000000)) >> 40 |
(i & UINT64_C(0x0000FF0000000000)) >> 24 |
(i & UINT64_C(0x000000FF00000000)) >> 8 |
(i & UINT64_C(0x00000000FF000000)) << 8 |
(i & UINT64_C(0x0000000000FF0000)) << 24 |
(i & UINT64_C(0x000000000000FF00)) << 40 |
(i & UINT64_C(0x00000000000000FF)) << 56;
return i;
}
static OF_INLINE void
OF_BSWAP32_V(uint32_t *buf, size_t len)
{
while (len--) {
*buf = OF_BSWAP32(*buf);
buf++;
}
}
#ifdef OF_BIG_ENDIAN
#define OF_BSWAP16_IF_BE(i) OF_BSWAP16(i)
#define OF_BSWAP32_IF_BE(i) OF_BSWAP32(i)
#define OF_BSWAP64_IF_BE(i) OF_BSWAP64(i)
#define OF_BSWAP16_IF_LE(i) i
#define OF_BSWAP32_IF_LE(i) i
#define OF_BSWAP64_IF_LE(i) i
#define OF_BSWAP32_V_IF_BE(buf, len) OF_BSWAP32_V(buf, len)
#else
#define OF_BSWAP16_IF_BE(i) i
#define OF_BSWAP32_IF_BE(i) i
#define OF_BSWAP64_IF_BE(i) i
#define OF_BSWAP16_IF_LE(i) OF_BSWAP16(i)
#define OF_BSWAP32_IF_LE(i) OF_BSWAP32(i)
#define OF_BSWAP64_IF_LE(i) OF_BSWAP64(i)
#define OF_BSWAP32_V_IF_BE(buf, len)
#endif
#define OF_ROL(val, bits) \
(((val) << (bits)) | ((val) >> (32 - (bits))))
#define OF_HASH_INIT(hash) hash = 0
#define OF_HASH_ADD(hash, byte) \
{ \
hash += byte; \
hash += (hash << 10); \
hash ^= (hash >> 6); \
}
#define OF_HASH_FINALIZE(hash) \
{ \
hash += (hash << 3); \
hash ^= (hash >> 11); \
hash += (hash << 15); \
}