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author | John Crispin <blogic@openwrt.org> | 2013-06-21 16:54:37 +0000 |
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committer | John Crispin <blogic@openwrt.org> | 2013-06-21 16:54:37 +0000 |
commit | f1b4824c865b228039d84b2605b2e7e4f34cddeb (patch) | |
tree | 37c9cbe251e4fb790aaa72e862c35822be30b491 /package/system/mtd/src/crc32.h | |
parent | d2642de7494bba312bbb22cfeb3ad77130a10047 (diff) | |
download | master-187ad058-f1b4824c865b228039d84b2605b2e7e4f34cddeb.tar.gz master-187ad058-f1b4824c865b228039d84b2605b2e7e4f34cddeb.tar.bz2 master-187ad058-f1b4824c865b228039d84b2605b2e7e4f34cddeb.zip |
packages: clean up the package folder
Signed-off-by: John Crispin <blogic@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37007 3c298f89-4303-0410-b956-a3cf2f4a3e73
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 |