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/* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
#ifndef UINT32_H
#define UINT32_H
#include <inttypes.h> /* uint32_t, int32_t */
#include <stddef.h> /* size_t */
#ifdef __cplusplus
extern "C" {
#endif
typedef uint32_t uint32;
typedef int32_t int32;
#if (defined(__i386__) || defined(__x86_64__)) && !defined(NO_UINT32_MACROS)
/* On x86 and x64 unaligned access are OK and the compiler knows it and
* will collapse this long-looking code into a single load or store
* instruction, so turn it into inline functions */
static inline void uint32_pack(char* out,uint32 in) {
out[0]=in;
out[1]=in>>8;
out[2]=in>>16;
out[3]=in>>24;
}
static inline void uint32_unpack(const char *in,uint32* out) {
const unsigned char* i = (const unsigned char*)in;
*out=i[0] | (i[1]<<8) | (i[2]<<16) | (i[3]<<24);
}
static inline uint32 uint32_read(const char* in) {
const unsigned char* i = (const unsigned char*)in;
return i[0] | (i[1]<<8) | (i[2]<<16) | (i[3]<<24);
}
static inline void uint32_pack_big(char *out,uint32 in) {
out[0]=in>>24;
out[1]=in>>16;
out[2]=in>>8;
out[3]=in;
}
static inline void uint32_unpack_big(const char *in,uint32* out) {
const unsigned char* i = (const unsigned char*)in;
*out=(i[0]<<24) | (i[1]<<16) | (i[2]<<8) | i[3];
}
static inline uint32 uint32_read_big(const char *in) {
const unsigned char* i = (const unsigned char*)in;
return (i[0]<<24) | (i[1]<<16) | (i[2]<<8) | i[3];
}
#else
void uint32_pack(char *out,uint32 in);
void uint32_pack_big(char *out,uint32 in);
void uint32_unpack(const char *in,uint32* out);
void uint32_unpack_big(const char *in,uint32* out);
uint32 uint32_read(const char *in);
uint32 uint32_read_big(const char *in);
#endif
static inline size_t fmt_uint32(char* out, uint32 in) {
if (out) uint32_pack(out,in);
return 4;
}
static inline size_t fmt_uint32_big(char* out, uint32 in) {
if (out) uint32_pack_big(out,in);
return 4;
}
static inline size_t scan_uint32(const char* in, size_t len, uint32_t* b) {
if (len<4) return 0;
*b = uint32_read(in);
return 4;
}
static inline size_t scan_uint32_big(const char* in, size_t len, uint32_t* b) {
if (len<4) return 0;
*b = uint32_read_big(in);
return 4;
}
#ifdef __cplusplus
}
inline void uint32_pack(unsigned char* out,uint32 in) {
uint32_pack(reinterpret_cast<char*>(out), in);
}
inline void uint32_pack_big(unsigned char* out,uint32 in) {
uint32_pack_big(reinterpret_cast<char*>(out), in);
}
inline void uint32_unpack(const unsigned char *in,uint32* out) {
uint32_unpack(reinterpret_cast<const char*>(in), out);
}
inline void uint32_unpack_big(const unsigned char *in,uint32* out) {
uint32_unpack_big(reinterpret_cast<const char*>(in), out);
}
inline void uint32_pack(uint32* out,uint32 in) {
uint32_pack(reinterpret_cast<char*>(out), in);
}
inline void uint32_pack_big(uint32* out,uint32 in) {
uint32_pack_big(reinterpret_cast<char*>(out), in);
}
inline void uint32_unpack(uint32* *in,uint32* out) {
uint32_unpack(reinterpret_cast<const char*>(in), out);
}
inline void uint32_unpack_big(uint32* *in,uint32* out) {
uint32_unpack_big(reinterpret_cast<const char*>(in), out);
}
inline uint32 uint32_read(const unsigned char *in) {
return uint32_read(reinterpret_cast<const char*>(in));
}
inline uint32 uint32_read_big(const unsigned char *in) {
return uint32_read_big(reinterpret_cast<const char*>(in));
}
inline uint32 uint32_read(const uint32 *in) {
return uint32_read(reinterpret_cast<const char*>(in));
}
inline uint32 uint32_read_big(const uint32 *in) {
return uint32_read_big(reinterpret_cast<const char*>(in));
}
inline uint32 uint_read(const uint32* in) {
return uint32_read(reinterpret_cast<const char*>(in));
}
inline uint32 uint_read_big(const uint32* in) {
return uint32_read_big(reinterpret_cast<const char*>(in));
}
#endif
#endif
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