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Make H3 seed configurable.

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This commit is contained in:
Matthias Vallentin 2013-06-13 23:07:31 -07:00
parent 1f90b539a8
commit 529d120376
1 changed files with 2 additions and 2 deletions
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4
src/H3.h
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@ -65,7 +65,7 @@
template<class T, int N> class H3 { template<class T, int N> class H3 {
T byte_lookup[N][H3_BYTE_RANGE]; T byte_lookup[N][H3_BYTE_RANGE];
public: public:
H3() H3(T seed = bro_random())
{ {
T bit_lookup[N * CHAR_BIT]; T bit_lookup[N * CHAR_BIT];
@ -74,7 +74,7 @@ public:
bit_lookup[bit] = 0; bit_lookup[bit] = 0;
for ( size_t i = 0; i < sizeof(T)/2; i++ ) for ( size_t i = 0; i < sizeof(T)/2; i++ )
// assume random() returns at least 16 random bits // assume random() returns at least 16 random bits
bit_lookup[bit] = (bit_lookup[bit] << 16) | (bro_random() & 0xFFFF); bit_lookup[bit] = (bit_lookup[bit] << 16) | (seed & 0xFFFF);
} }
for ( size_t byte = 0; byte < N; byte++ ) for ( size_t byte = 0; byte < N; byte++ )