combine.h File Reference

#include <stddef.h>
#include <derive-c/core/namespace.h>

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Functions
static DC_PUBLIC size_t	dc_hash_combine (size_t seed, size_t h)

Function Documentation

dc_hash_combine()

DC_PUBLIC size_t dc_hash_combine ( size_t seed, size_t h )

inlinestatic

Examples

container/map.c, and container/set.c.

Definition at line 7 of file combine.h.

                                                                      {
    // 0x9e3779b97f4a7c15 is 64-bit fractional part of the golden ratio;
    // “+ (seed<<6) + (seed>>2)” mixes seed’s bits
    return seed ^ (h + 0x9e3779b97f4a7c15ULL + (seed << 6) + (seed >> 2));
}