packages: clean up the package folder
[openwrt.org/openwrt.git] / package / system / mtd / src / crc32.h
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#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
 
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