Fixed.u32_bc_go: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/src/math/fixed.bend as Fixed
Lines 206-212 of bend-collections-laws-math@1.0.0.0/src/math/fixed.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/src/math/fixed.bend&start_line=206&end_line=212

import Base

# the 1 bits of the k low nibbles of x, a nibble at a time
def u32_bc_go(fuel: Nat, +x: U32) -> Nat:
  match fuel:
    case 0n:
      0n
    case 1n+k:
      Nat.add(ones4(U32.to_nat(U32.mod(x, 16))), u32_bc_go(k, U32.shrn(x, 4n)))

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mod
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shrn
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/fixed.bend&name=ones4