U64.is_zero: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/math/u64.bend as U64
Lines 22-24 of bend-collections-laws-crypto@1.0.0.0/src/math/u64.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/u64.bend&start_line=22&end_line=24

import Base

def is_zero(a: U64) -> Bool:
  U64{lo, hi} = a
  Bool.and(U32.is_zero(lo), U32.is_zero(hi))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_zero
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/u64.bend&name=U64