Natural.isqrt: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/src/math/natural.bend as Natural
Lines 232-233 of bend-collections-laws-math@1.0.0.0/src/math/natural.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/src/math/natural.bend&start_line=232&end_line=233

import Base
import bend-collections-laws-math@1.0.0.0/src/math/pow2.bend as P2

def isqrt(+n: Nat) -> Nat:
  isqrt_from(n, P2.pow2t(1n+Nat.div(bit_length(n), 2n)))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.div
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/natural.bend&name=bit_length
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/natural.bend&name=isqrt_from
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/pow2.bend&name=pow2t