Function gmp_mpfr_sys::mpfr::mpfr_set_z_2exp

pub unsafe extern fn mpfr_set_z_2exp(rop: *mut __mpfr_struct,
                                     op: *const mpz_t,
                                     e: mpfr_exp_t,
                                     rnd: mpfr_rnd_t)
                                     -> c_int