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Use the `get_previous_power_of_2` function in ethereum/eth2.0-specs#1323

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Hsiao-Wei Wang 2019-08-15 16:14:07 +08:00
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specs/light_client/merkle_proofs.md
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@ -50,8 +50,7 @@ def get_previous_power_of_two(x: int) -> int:
""" """
Get the previous power of 2 >= the input. Get the previous power of 2 >= the input.
""" """
assert x >= 2 return x if x <= 2 else 2 * get_previous_power_of_2(x // 2)
return get_next_power_of_two(x) // 2
``` ```
## Generalized Merkle tree index ## Generalized Merkle tree index