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| author | John Crispin <john@openwrt.org> | 2013-06-21 16:54:37 +0000 |
|---|---|---|
| committer | John Crispin <john@openwrt.org> | 2013-06-21 16:54:37 +0000 |
| commit | 4ebf19b48fafc8d94e14e4ba779969613b241a6a (patch) | |
| tree | 9918f890a8915023b49ea30948beb5d048c333fa /package/system/mtd/src/crc32.h | |
| parent | 44b1688e6c7b4f16f7165fbd560e1183aef69090 (diff) | |
| download | upstream-4ebf19b48fafc8d94e14e4ba779969613b241a6a.tar.gz upstream-4ebf19b48fafc8d94e14e4ba779969613b241a6a.tar.bz2 upstream-4ebf19b48fafc8d94e14e4ba779969613b241a6a.zip | |
packages: clean up the package folder
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 37007
Diffstat (limited to 'package/system/mtd/src/crc32.h')
| -rw-r--r-- | package/system/mtd/src/crc32.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/package/system/mtd/src/crc32.h b/package/system/mtd/src/crc32.h new file mode 100644 index 0000000000..68f8ee4feb --- /dev/null +++ b/package/system/mtd/src/crc32.h @@ -0,0 +1,26 @@ +#ifndef CRC32_H +#define CRC32_H + +#include <stdint.h> + +extern const uint32_t crc32_table[256]; + +/* Return a 32-bit CRC of the contents of the buffer. */ + +static inline uint32_t +crc32(uint32_t val, const void *ss, int len) +{ + const unsigned char *s = ss; + while (--len >= 0) + val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8); + return val; +} + +static inline unsigned int crc32buf(char *buf, size_t len) +{ + return crc32(0xFFFFFFFF, buf, len); +} + + + +#endif |