From: Jim Freeze <jim@...>
Date: 2002-11-24T00:39:44+09:00
Subject: Re: How do I add numbers in C?

Oops, old code. This IS the code that does not work:
> I have the following code to add a number to an instance variable:
> 
static VALUE
test_plus(self, y)
  VALUE self;
  VALUE y;
{
  VALUE x;
  num = rb_iv_get(self, "@x");
  switch (TYPE(num)) {
    case T_FIXNUM:
      x = fix_plus(num, y);
    case T_BIGNUM:
      x = rb_big_plus(num, y);
    case T_FLOAT:
      x = flo_plus(num, y);
    default:
    /* Not implemented. Error? */
      return self;
  }
  rb_iv_set(self,"@x", x);
  return self;
}

 
> The code compiles, but when I run I get:
> 
> dyld: ruby Undefined symbols:
> _fix_plus
> _flo_plus
> 
> I couldn't find rb_fix_plus or rb_flo_plus, so I am not
> certain I even have the right functions. fix_plus and flo_plus
> don't seem to follow the rb_<class>_<meth> form.
> Can someone point me in the right direction here?
> Thanks
> 
> -- 
> Jim Freeze
> 

-- 
Jim Freeze
----------
"The subspace _W inherits the other 8 properties of _V. And there aren't
even any property taxes."
		-- J. MacKay, Mathematics 134b