struct hoge *
rb_fuga(VALUE obj)
{
  return Qtrue;
}

/*
 * Hello Mars
 */
VALUE
rb_hello_mars(VALUE obj, VALUE n)
{
    return Qtrue;
}

void
Init_Multifile(void)
{
    rb_cMultifile  = rb_define_class("Multifile", rb_cObject);
    rb_define_method(rb_cMultifile, "extra", rb_extra, 1); /* in extra.c */
    rb_define_method(rb_cMultifile, "hello_mars", rb_hello_mars, 1);
}