Fixed.u32_np: 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 222-233 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=222&end_line=233

import Base
import bend-collections-laws-math@1.0.0.0/src/math/number.bend as NB

# the least prime above n below 2^32: the candidates n+1, n+2, ... stop at
# the first prime or when the next candidate wraps to 0
def u32_np(fuel: Nat, +m: U32, wrapped: Bool, prime: Bool) -> Maybe<&2, U32>:
  match fuel wrapped prime:
    case 0n _ _:
      None{}
    case 1n+f True{} _:
      None{}
    case 1n+f False{} True{}:
      Some{m}
    case 1n+ +f False{} False{}:
      u32_np(f, U32.add(m, 1), U32.is_zero(U32.add(m, 1)), NB.is_prime(U32.to_nat(U32.add(m, 1))))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_zero
  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/number.bend&name=is_prime