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eth2.0-specs
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Order by `committees_per_epoch`, `seed`, `shuffling_epoch`, and 

`shuffling_start_shard`
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Hsiao-Wei Wang 2019-02-28 19:07:37 +08:00
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7
specs/core/0_beacon-chain.md
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@ -55,6 +55,7 @@
- [Helper functions](#helper-functions) - [Helper functions](#helper-functions)
- [`hash`](#hash) - [`hash`](#hash)
- [`hash_tree_root`](#hash_tree_root) - [`hash_tree_root`](#hash_tree_root)
- [`signed_root`](#signed_root)
- [`slot_to_epoch`](#slot_to_epoch) - [`slot_to_epoch`](#slot_to_epoch)
- [`get_previous_epoch`](#get_previous_epoch) - [`get_previous_epoch`](#get_previous_epoch)
- [`get_current_epoch`](#get_current_epoch) - [`get_current_epoch`](#get_current_epoch)
@ -879,19 +880,19 @@ def get_crosslink_committees_at_slot(state: BeaconState,
epochs_since_last_registry_update = current_epoch - state.validator_registry_update_epoch epochs_since_last_registry_update = current_epoch - state.validator_registry_update_epoch
if registry_change: if registry_change:
committees_per_epoch = get_next_epoch_committee_count(state) committees_per_epoch = get_next_epoch_committee_count(state)
shuffling_epoch = next_epoch
seed = generate_seed(state, next_epoch) seed = generate_seed(state, next_epoch)
shuffling_epoch = next_epoch
current_committees_per_epoch = get_current_epoch_committee_count(state) current_committees_per_epoch = get_current_epoch_committee_count(state)
shuffling_start_shard = (state.current_shuffling_start_shard + current_committees_per_epoch) % SHARD_COUNT shuffling_start_shard = (state.current_shuffling_start_shard + current_committees_per_epoch) % SHARD_COUNT
elif epochs_since_last_registry_update > 1 and is_power_of_two(epochs_since_last_registry_update): elif epochs_since_last_registry_update > 1 and is_power_of_two(epochs_since_last_registry_update):
committees_per_epoch = get_next_epoch_committee_count(state) committees_per_epoch = get_next_epoch_committee_count(state)
shuffling_epoch = next_epoch
seed = generate_seed(state, next_epoch) seed = generate_seed(state, next_epoch)
shuffling_epoch = next_epoch
shuffling_start_shard = state.current_shuffling_start_shard shuffling_start_shard = state.current_shuffling_start_shard
else: else:
committees_per_epoch = get_current_epoch_committee_count(state) committees_per_epoch = get_current_epoch_committee_count(state)
shuffling_epoch = state.current_shuffling_epoch
seed = state.current_shuffling_seed seed = state.current_shuffling_seed
shuffling_epoch = state.current_shuffling_epoch
shuffling_start_shard = state.current_shuffling_start_shard shuffling_start_shard = state.current_shuffling_start_shard
shuffling = get_shuffling( shuffling = get_shuffling(