OpenWrt – Blame information for rev 1
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1 | office | 1 | #ifndef CRC32_H |
2 | #define CRC32_H |
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3 | |||
4 | #include <stdint.h> |
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5 | |||
6 | extern const uint32_t crc32_table[256]; |
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7 | |||
8 | /* Return a 32-bit CRC of the contents of the buffer. */ |
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9 | |||
10 | static inline uint32_t |
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11 | crc32(uint32_t val, const void *ss, int len) |
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12 | { |
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13 | const unsigned char *s = ss; |
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14 | while (--len >= 0) |
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15 | val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8); |
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16 | return val; |
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17 | } |
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18 | |||
19 | static inline unsigned int crc32buf(char *buf, size_t len) |
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20 | { |
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21 | return crc32(0xFFFFFFFF, buf, len); |
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22 | } |
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23 | |||
24 | |||
25 | |||
26 | #endif |