Function gmp_mpfr_sys::mpfr::get_str

pub unsafe extern "C" fn get_str(
    str: *mut c_char,
    expptr: *mut exp_t,
    base: c_int,
    n: usize,
    op: *const mpfr_t,
    rnd: rnd_t
) -> *mut c_char

See: mpfr_get_str