def Factorial.checked

bend-collections-laws-math@1.0.0.0 · spec/math/generic.bend:166

import Base
import bend-collections-laws-math@1.0.0.0/src/math/num.bend as N
import bend-collections-laws-math@1.0.0.0/src/math/generic.bend as G
import bend-collections-laws-math@1.0.0.0/src/math/natural.bend as M

166def Factorial.checked(~T: Data, ~op: N.Op<T> -> T, ~test: N.Test<T> -> Bool, ~val: T -> Nat, ~of: Nat -> T, +w: Nat, +n: T) -> Type:
167  {G.factorial(~T, ~op, ~test, n) == checked(~T, ~of, w, M.factorial(val(n))) : Result<&2, &2, N.NumError, T>}