bitmanipulation.h
50 lines
| 944 B
| text/x-c
|
CLexer
/ mercurial / bitmanipulation.h
Maciej Fijalkowski
|
r29444 | #ifndef _HG_BITMANIPULATION_H_ | ||
| #define _HG_BITMANIPULATION_H_ | ||||
Martin von Zweigbergk
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r32646 | #include <string.h> | ||
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Maciej Fijalkowski
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r29444 | #include "compat.h" | ||
| static inline uint32_t getbe32(const char *c) | ||||
| { | ||||
| const unsigned char *d = (const unsigned char *)c; | ||||
Augie Fackler
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r34698 | return ((d[0] << 24) | (d[1] << 16) | (d[2] << 8) | (d[3])); | ||
|
Maciej Fijalkowski
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r29444 | } | ||
| static inline int16_t getbeint16(const char *c) | ||||
| { | ||||
| const unsigned char *d = (const unsigned char *)c; | ||||
|
Augie Fackler
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r34698 | return ((d[0] << 8) | (d[1])); | ||
|
Maciej Fijalkowski
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r29444 | } | ||
| static inline uint16_t getbeuint16(const char *c) | ||||
| { | ||||
| const unsigned char *d = (const unsigned char *)c; | ||||
|
Augie Fackler
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r34698 | return ((d[0] << 8) | (d[1])); | ||
|
Maciej Fijalkowski
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r29444 | } | ||
| static inline void putbe32(uint32_t x, char *c) | ||||
| { | ||||
| c[0] = (x >> 24) & 0xff; | ||||
| c[1] = (x >> 16) & 0xff; | ||||
| c[2] = (x >> 8) & 0xff; | ||||
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Augie Fackler
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r34698 | c[3] = (x)&0xff; | ||
|
Maciej Fijalkowski
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r29444 | } | ||
| static inline double getbefloat64(const char *c) | ||||
| { | ||||
| const unsigned char *d = (const unsigned char *)c; | ||||
| double ret; | ||||
| int i; | ||||
| uint64_t t = 0; | ||||
| for (i = 0; i < 8; i++) { | ||||
|
Augie Fackler
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r34698 | t = (t << 8) + d[i]; | ||
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Maciej Fijalkowski
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r29444 | } | ||
| memcpy(&ret, &t, sizeof(t)); | ||||
| return ret; | ||||
| } | ||||
| #endif | ||||