fact: Definition f_neg_int beta := I.inv prec (I.mul prec (I.fromZ prec (Z.of_nat beta)) (I.power_int prec (I.ln prec A) (Z.of_nat beta))).
imports: Coq(Reals ZArith Psatz Fourier_util) Flocq(Raux) Coquelicot(Coquelicot AutoDerive) mathcomp.ssreflect(ssreflect ssrfun ssrbool ssrnat bigop) Stdlib Coquelicot Xreal Interval