mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-03 07:00:38 +02:00
20 lines
352 B
C
20 lines
352 B
C
|
#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;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|