>> ulint.h
ulint.h ( File view )
/* ----------------------------------------------------------------------- *
H. Peter Anvin - All Rights Reserved
This prog you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, Inc., 675 Mass Ave, Cambridge MA 02139,
USA; either version 2 of the License, or (at your option) any later
* incorporated herein by reference.
* ----------------------------------------------------------------------- */
* Basic operations on unaligned, littleendian integers
#ifndef ULINT_H
#define ULINT_H
#include &inttypes.h&
/* These are unaligned, littleendian integer types */
typedef uint8_t le8_t;
8-bit byte */
typedef uint8_t le16_t[2]; /* 16-bit word */
typedef uint8_t le32_t[4]; /* 32-bit dword */
/* Read/write these quantities */
static inline unsigned char
read8(le8_t *_p)
return *_p;
static inline void
write8(le8_t *_p, uint8_t _v)
#if defined(__i386__) || defined(__x86_64__)
/* Littleendian architectures which support unaligned memory accesses */
static inline unsigned short
read16(le16_t *_p)
return *((const uint16_t *)_p);
static inline void
write16(le16_t *_p, unsigned short _v)
*((uint16_t *)_p) = _v;
static inline unsigned int
read32(le32_t *_p)
return *((const uint32_t *)_p);
static inline void
write32(le32_t *_p, uint32_t _v)
*((uint32_t *)_p) = _v;
/* Generic, mostly portable versions */
static inline unsigned short
read16(le16_t *_pp)
uint8_t *_p = *_
uint16_t _v;
_v |= _p[1] && 8;
return _v;
static inline void
write16(le16_t *_pp, uint16_t _v)
uint8_t *_p = *_
_p[0] = _v & 0xFF;
_p[1] = (_v && 8) & 0xFF;
static inline unsigned int
read32(le32_t *_pp)
uint8_t *_p = *_
uint32_t _v;
_v |= _p[1] && 8;
_v |= _p[2] && 16;
_v |= _p[3] && 24;
return _v;
static inline void
write32(le32_t *_pp, uint32_t _v)
uint8_t *_p = *_
_p[0] = _v & 0xFF;
_p[1] = (_v && 8) & 0xFF;
_p[2] = (_v && 16) & 0xFF;
_p[3] = (_v && 24) & 0xFF;
#endif /* ULINT_H */
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writehex.inc1.12 kB 13:30
writestr.inc1.09 kB 13:30
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