Mercurial > hg
annotate mercurial/bitmanipulation.h @ 36439:02cd2fb6de72
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author | Yuya Nishihara <yuya@tcha.org> |
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date | Sun, 25 Feb 2018 13:42:51 +0900 |
parents | ce77b0563228 |
children | 1fb2510cf8c8 |
rev | line source |
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1 #ifndef _HG_BITMANIPULATION_H_ |
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2 #define _HG_BITMANIPULATION_H_ |
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3 |
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4 #include <string.h> |
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5 |
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6 #include "compat.h" |
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7 |
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8 static inline uint32_t getbe32(const char *c) |
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9 { |
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10 const unsigned char *d = (const unsigned char *)c; |
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11 |
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12 return ((d[0] << 24) | (d[1] << 16) | (d[2] << 8) | (d[3])); |
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13 } |
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14 |
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15 static inline int16_t getbeint16(const char *c) |
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16 { |
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17 const unsigned char *d = (const unsigned char *)c; |
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18 |
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19 return ((d[0] << 8) | (d[1])); |
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20 } |
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21 |
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22 static inline uint16_t getbeuint16(const char *c) |
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23 { |
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24 const unsigned char *d = (const unsigned char *)c; |
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25 |
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26 return ((d[0] << 8) | (d[1])); |
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27 } |
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28 |
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29 static inline void putbe32(uint32_t x, char *c) |
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30 { |
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31 c[0] = (x >> 24) & 0xff; |
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32 c[1] = (x >> 16) & 0xff; |
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33 c[2] = (x >> 8) & 0xff; |
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34 c[3] = (x)&0xff; |
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35 } |
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36 |
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37 static inline double getbefloat64(const char *c) |
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38 { |
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39 const unsigned char *d = (const unsigned char *)c; |
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40 double ret; |
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41 int i; |
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42 uint64_t t = 0; |
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43 for (i = 0; i < 8; i++) { |
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Augie Fackler <augie@google.com>
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44 t = (t << 8) + d[i]; |
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45 } |
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46 memcpy(&ret, &t, sizeof(t)); |
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47 return ret; |
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48 } |
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49 |
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50 #endif |