35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
#ifndef __CMPH_HASH_H__
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#define __CMPH_HASH_H__
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#include "cmph_types.h"
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typedef union __hash_state_t hash_state_t;
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hash_state_t *hash_state_new(CMPH_HASH, cmph_uint32 hashsize);
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/** \fn cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen);
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* \param state is a pointer to a hash_state_t structure
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* \param key is a pointer to a key
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* \param keylen is the key length
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* \return an integer that represents a hash value of 32 bits.
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*/
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cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen);
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/** \fn void hash_vector(hash_state_t *state, const char *key, cmph_uint32 keylen, cmph_uint32 * hashes);
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* \param state is a pointer to a hash_state_t structure
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* \param key is a pointer to a key
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* \param keylen is the key length
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* \param hashes is a pointer to a memory large enough to fit three 32-bit integers.
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*/
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void hash_vector(hash_state_t *state, const char *key, cmph_uint32 keylen, cmph_uint32 * hashes);
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void hash_state_dump(hash_state_t *state, char **buf, cmph_uint32 *buflen);
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hash_state_t * hash_state_copy(hash_state_t *src_state);
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hash_state_t *hash_state_load(const char *buf, cmph_uint32 buflen);
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void hash_state_destroy(hash_state_t *state);
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#endif
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