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#include "fnv_hash.h"
#include <stdlib.h>
fnv_state_t *fnv_state_new()
{
fnv_state_t *state = (fnv_state_t *)malloc(sizeof(fnv_state_t));
state->hashfunc = CMPH_HASH_FNV;
return state;
}
void fnv_state_destroy(fnv_state_t *state)
{
free(state);
}
cmph_uint32 fnv_hash(fnv_state_t *state, const char *k, cmph_uint32 keylen)
{
const unsigned char *bp = (const unsigned char *)k;
const unsigned char *be = bp + keylen;
static unsigned int hval = 0;
while (bp < be)
{
//hval *= 0x01000193; good for non-gcc compiler
hval += (hval << 1) + (hval << 4) + (hval << 7) + (hval << 8) + (hval << 24); //good for gcc
hval ^= *bp++;
}
return hval;
}
void fnv_state_dump(fnv_state_t *state, char **buf, cmph_uint32 *buflen)
{
*buf = NULL;
*buflen = 0;
return;
}
fnv_state_t * fnv_state_copy(fnv_state_t *src_state)
{
fnv_state_t *dest_state = (fnv_state_t *)malloc(sizeof(fnv_state_t));
dest_state->hashfunc = src_state->hashfunc;
return dest_state;
}
fnv_state_t *fnv_state_load(const char *buf, cmph_uint32 buflen)
{
fnv_state_t *state = (fnv_state_t *)malloc(sizeof(fnv_state_t));
state->hashfunc = CMPH_HASH_FNV;
return state;
}
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