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Store truncated indices in the same char* as the hash (H/T tromp for the idea!)

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This commit is contained in:
Jack Grigg
2016-05-04 13:47:49 +12:00
parent c92c1f6050
commit 39f5cb35f9
2 changed files with 57 additions and 20 deletions
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11
src/crypto/equihash.h
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@@ -76,21 +76,22 @@ bool IsValidBranch(const FullStepRow& a, const unsigned int ilen, const eh_trunc
class TruncatedStepRow : public StepRow
{
private:
std::vector<eh_trunc> indices;
unsigned int lenIndices;
public:
TruncatedStepRow(unsigned int n, const eh_HashState& base_state, eh_index i, unsigned int ilen);
~TruncatedStepRow() { }
TruncatedStepRow(const TruncatedStepRow& a) : StepRow {a}, indices(a.indices) { }
TruncatedStepRow(const TruncatedStepRow& a);
TruncatedStepRow& operator=(const TruncatedStepRow& a);
TruncatedStepRow& operator^=(const TruncatedStepRow& a);
bool IndicesBefore(const TruncatedStepRow& a) { return indices[0] < a.indices[0]; }
std::vector<eh_trunc> GetPartialSolution() { return std::vector<eh_trunc>(indices); }
void TrimHash(int l);
inline bool IndicesBefore(const TruncatedStepRow& a) const { return memcmp(hash+len, a.hash+a.len, lenIndices) < 0; }
eh_trunc* GetPartialSolution(eh_index soln_size) const;
friend inline const TruncatedStepRow operator^(const TruncatedStepRow& a, const TruncatedStepRow& b) {
if (a.indices[0] < b.indices[0]) { return TruncatedStepRow(a) ^= b; }
if (a.IndicesBefore(b)) { return TruncatedStepRow(a) ^= b; }
else { return TruncatedStepRow(b) ^= a; }
}
};