def lt_doubled
import bendtorch-core@0.1.0.0/src/storage/arith.bend as Arithimport Base
314def lt_doubled(+x: Nat, +c: Nat, h: {Nat.is_lt(x, Nat.add(c, c)) == True{} : Bool}) -> {Nat.is_lt(x, Nat.double(c)) == True{} : Bool}:
315 %double_self(c) : {Nat.is_lt(x, _) == True{} : Bool}
316 h