Function libgcrypt_sys::gcry_mpi_scan

pub unsafe extern fn gcry_mpi_scan(ret_mpi: *mut gcry_mpi_t,
                                   format: gcry_mpi_format,
                                   buffer: *const c_void,
                                   buflen: size_t,
                                   nscanned: *mut size_t)
                                   -> gcry_error_t