fact: Definition Xpower_int' x n := match n with | 0%Z => Xreal 1%R | Zpos p => Xreal (pow x (nat_of_P p)) | Zneg p => if is_zero x then Xnan else Xreal (Rinv (pow x (nat_of_P p))) end.
imports: Coq(Reals Bool) Flocq(Raux) mathcomp.ssreflect(ssreflect) Stdlib