Function rgsl::fermi_dirac::complete_integrals::fermi_dirac_m1_e

pub fn fermi_dirac_m1_e(x: f64) -> (Value, Result)

This routine computes the complete Fermi-Dirac integral with an index of -1. This integral is given by F_{-1}(x) = e^x / (1 + e^x).