W64.bitlen: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/src/math/w64.bend as W64
Lines 224-226 of bend-collections-laws-math@1.0.0.0/src/math/w64.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/src/math/w64.bend&start_line=224&end_line=226

import Base

# the number of bits of x (0 for 0), by a binary search on the top bit
def bitlen(+x: U32) -> Nat:
  bl_fin(bl_step(1n, bl_step(2n, bl_step(4n, bl_step(8n, bl_step(16n, (0n, x)))))))

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=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/w64.bend&name=bl_fin
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/w64.bend&name=bl_step