fact: Definition mantissa_sign m := if BigZ.eqb m 0%bigZ then Mzero else match m with | BigZ.Pos p => Mnumber false p | BigZ.Neg p => Mnumber true p end.
imports: Coq(Bool ZArith Reals Psatz) Bignums(BigN BigZ) Flocq(Zaux Raux Digits) Basic Generic Generic_proof Specific_sig