#include <inttypes.h>
#include <sys/types.h>
-uint32_t jenkins_hashword(const uint32_t *k, size_t length, uint32_t initval);
+#include "macro.h"
+
+uint32_t jenkins_hashword(const uint32_t *k, size_t length, uint32_t initval) _pure_;
void jenkins_hashword2(const uint32_t *k, size_t length, uint32_t *pc, uint32_t *pb);
-uint32_t jenkins_hashlittle(const void *key, size_t length, uint32_t initval);
+uint32_t jenkins_hashlittle(const void *key, size_t length, uint32_t initval) _pure_;
void jenkins_hashlittle2(const void *key, size_t length, uint32_t *pc, uint32_t *pb);
-uint32_t jenkins_hashbig(const void *key, size_t length, uint32_t initval);
+uint32_t jenkins_hashbig(const void *key, size_t length, uint32_t initval) _pure_;
static inline uint64_t hash64(const void *data, size_t length) {
uint32_t a = 0, b = 0;