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Fix precision of average_output_time 

The fix as suggested by <jberman> on IRC. Before the fix, it would truncate 1.9 to 1 skewing the output selection.
This commit is contained in:
j-berman 2021-07-16 11:06:53 +02:00 committed by SChernykh
parent a39b1d56c8
commit 76542ea709
1 changed files with 1 additions and 7 deletions
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8
src/wallet/wallet2.cpp
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@ -1024,13 +1024,7 @@ gamma_picker::gamma_picker(const std::vector<uint64_t> &rct_offsets, double shap
end = rct_offsets.data() + rct_offsets.size() - CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE; end = rct_offsets.data() + rct_offsets.size() - CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE;
num_rct_outputs = *(end - 1); num_rct_outputs = *(end - 1);
THROW_WALLET_EXCEPTION_IF(num_rct_outputs == 0, error::wallet_internal_error, "No rct outputs"); THROW_WALLET_EXCEPTION_IF(num_rct_outputs == 0, error::wallet_internal_error, "No rct outputs");
THROW_WALLET_EXCEPTION_IF(outputs_to_consider == 0, error::wallet_internal_error, "No rct outputs to consider"); average_output_time = DIFFICULTY_TARGET_V2 * blocks_to_consider / static_cast<double>(outputs_to_consider); // this assumes constant target over the whole rct range
average_output_time = DIFFICULTY_TARGET_V2 * blocks_to_consider / outputs_to_consider; // this assumes constant target over the whole rct range
if (average_output_time == 0) {
// TODO: apply this to all cases; do so alongside a hard fork, where all clients will update at the same time, preventing anonymity puddle formation
average_output_time = DIFFICULTY_TARGET_V2 * blocks_to_consider / static_cast<double>(outputs_to_consider);
}
THROW_WALLET_EXCEPTION_IF(average_output_time == 0, error::wallet_internal_error, "Average seconds per output cannot be 0.");
}; };
gamma_picker::gamma_picker(const std::vector<uint64_t> &rct_offsets): gamma_picker(rct_offsets, GAMMA_SHAPE, GAMMA_SCALE) {} gamma_picker::gamma_picker(const std::vector<uint64_t> &rct_offsets): gamma_picker(rct_offsets, GAMMA_SHAPE, GAMMA_SCALE) {}