File dp_hash64.h¶

#ifndef DP_HASH64_H
#define DP_HASH64_H

#include <stddef.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C"
{
#endif

#define DP_HASH64_INIT UINT64_C (0xcbf29ce484222325)

#define DP_HASH64_PRIME UINT64_C (0x100000001b3)

  static inline uint64_t
  dp_hash64 (uint64_t h, const void *data, size_t n)
  {
    const unsigned char *p = (const unsigned char *)data;
    for (size_t i = 0; i < n; i++)
      {
        h ^= p[i];
        h *= DP_HASH64_PRIME;
      }
    return h;
  }

#ifdef __cplusplus
}
#endif

#endif /* DP_HASH64_H */