Function gmp_mpfr_sys::mpfr::mpfr_mul_2exp

pub unsafe extern fn mpfr_mul_2exp(rop: *mut __mpfr_struct,
                                   op1: *const __mpfr_struct,
                                   op2: c_ulong,
                                   rnd: mpfr_rnd_t)
                                   -> c_int