Function libgcrypt_sys::gcry_mpi_print

pub unsafe extern fn gcry_mpi_print(format: gcry_mpi_format,
                                    buffer: *mut c_uchar,
                                    buflen: size_t,
                                    nwritten: *mut size_t,
                                    a: gcry_mpi_t)
                                    -> gcry_error_t