Generic.mul_by: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/math/generic.bend as Generic
Lines 438-442 of bend-collections-laws-crypto@1.0.0.0/src/math/generic.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/generic.bend&start_line=438&end_line=442

import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/num.bend as N

# (acc * x, still fits)
def mul_by(~T: Data, ~op: N.Op<T> -> T, ~test: N.Test<T> -> Bool, +x: T, st: T & Bool) -> T & Bool:
  match st:
    case Tuple{+a, +aok}:
      (op(N.Mul{a, x}), Bool.and(aok, Bool.not(test(N.MulOver{a, x}))))

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/num.bend&name=Op
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/num.bend&name=Test