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Updated get_custody_chunk_count 

Co-requisite with #1097
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vbuterin 2019-05-19 19:44:12 -04:00 committed by GitHub
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specs/core/1_custody-game.md
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@ -255,8 +255,8 @@ The `empty` function accepts and SSZ type as input and returns an object of that
```python ```python
def get_custody_chunk_count(attestation: Attestation) -> int: def get_custody_chunk_count(attestation: Attestation) -> int:
crosslink_start_epoch = attestation.data.latest_crosslink.epoch crosslink_start_epoch = attestation.data.latest_crosslink.start_epoch
crosslink_end_epoch = slot_to_epoch(attestation.data.slot) crosslink_end_epoch = attestation.data.latest_crosslink.end_epoch
crosslink_crosslink_length = min(MAX_EPOCHS_PER_CROSSLINK, end_epoch - start_epoch) crosslink_crosslink_length = min(MAX_EPOCHS_PER_CROSSLINK, end_epoch - start_epoch)
chunks_per_epoch = 2 * BYTES_PER_SHARD_BLOCK * SLOTS_PER_EPOCH // BYTES_PER_CUSTODY_CHUNK chunks_per_epoch = 2 * BYTES_PER_SHARD_BLOCK * SLOTS_PER_EPOCH // BYTES_PER_CUSTODY_CHUNK
return crosslink_crosslink_length * chunks_per_epoch return crosslink_crosslink_length * chunks_per_epoch