25 lines
582 B
C
25 lines
582 B
C
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#ifndef __CXXMPH_RANDOMLY_SEEDED_HASH__
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#define __CXXMPH_RANDOMLY_SEEDED_HASH__
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// Helper to create randomly seeded hash functions out of existing hash
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// functions that take a seed as a parameter.
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#include <cstdlib>
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#include "../src/cmph_types.h"
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#include "MurmurHash2.h"
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namespace cxxmph {
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struct RandomlySeededMurmur2 {
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RandomlySeededHashFunction() : seed(random()) { }
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cmph_uint32 operator()(const StringPiece& key) {
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return MurmurHash2(key.data(), key.length(), seed);
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}
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cmph_uint32 seed;
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};
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} // namespace cxxmph
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#endif // __CXXMPH_RANDOMLY_SEEDED_HASH__
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