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Merge pull request #7067 from sorpaas/patch-1

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ECIP-1039: Monetary policy rounding specification
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Marek Kotewicz 2017-11-24 15:49:33 +01:00 committed by Tomasz Drwięga
parent ef702b77dc
commit 0ec35d9ac5
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1 changed files with 9 additions and 1 deletions
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10
ethcore/src/ethereum/ethash.rs
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@ -447,9 +447,12 @@ fn ecip1017_eras_block_reward(era_rounds: u64, mut reward: U256, block_number:u6
} else { } else {
block_number / era_rounds block_number / era_rounds
}; };
let mut divi = U256::from(1);
for _ in 0..eras { for _ in 0..eras {
reward = reward / U256::from(5) * U256::from(4); reward = reward * U256::from(4);
divi = divi * U256::from(5);
} }
reward = reward / divi;
(eras, reward) (eras, reward)
} }
@ -515,6 +518,11 @@ mod tests {
let (eras, reward) = ecip1017_eras_block_reward(eras_rounds, start_reward, block_number); let (eras, reward) = ecip1017_eras_block_reward(eras_rounds, start_reward, block_number);
assert_eq!(15, eras); assert_eq!(15, eras);
assert_eq!(U256::from_str("271000000000000").unwrap(), reward); assert_eq!(U256::from_str("271000000000000").unwrap(), reward);
let block_number = 250000000;
let (eras, reward) = ecip1017_eras_block_reward(eras_rounds, start_reward, block_number);
assert_eq!(49, eras);
assert_eq!(U256::from_str("51212FFBAF0A").unwrap(), reward);
} }
#[test] #[test]