fact: Definition IfDec_Then_Else {A} (P : Prop) (t e : Comp A) := b <- { b | decides b P}; if b then t else e.
imports: Fiat.Common Fiat.Computation.Decidable Fiat.Computation.Core Fiat.Computation.Refinements.General Fiat.Computation.Monad Fiat.Computation.Refinements.General