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simplify calculate_committee_fraction (#4213)

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## Issue Addressed

[#4211](https://github.com/sigp/lighthouse/issues/4211)

## Proposed Changes

This PR conforms the helper function `calculate_committee_fraction` to the [v1.3.0 spec](https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/fork-choice.md#get_weight)

## Additional Info

the old definition of `calculate_committee_fraction` is almost identical, but the new definition is simpler.
This commit is contained in:
Eitan Seri-Levi
2023-05-03 09:02:58 +00:00
parent edbb47dd03
commit b1416c8a43
2 changed files with 4 additions and 8 deletions
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6
consensus/proto_array/src/proto_array.rs
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@@ -1055,13 +1055,9 @@ pub fn calculate_committee_fraction<E: EthSpec>(
justified_balances: &JustifiedBalances,
proposer_score_boost: u64,
) -> Option<u64> {
let average_balance = justified_balances
let committee_weight = justified_balances
.total_effective_balance
.checked_div(justified_balances.num_active_validators)?;
let committee_size = justified_balances
.num_active_validators
.checked_div(E::slots_per_epoch())?;
let committee_weight = committee_size.checked_mul(average_balance)?;
committee_weight
.checked_mul(proposer_score_boost)?
.checked_div(100)