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Re: new __builtin_choose_type (patch) (new builtin_equal_types patch)


Aldy Hernandez wrote:
> 
> On Wed, 2001-10-03 at 04:15, Magnus Fromreide wrote:
> > It is my feeling that it would be more general and cleaner to do something
> > along the lines of
> >
> > _Bool __builtin_equal_types(arg|type, arg|type)
> >
> > that doesn't evaluate the arguments if they are expressions and answers
> > the question of wether they are of the same type.
> >
> > Usage examples:
> >
> > __builtin_equal_types(x, y) ? no() : x = 10;
> > if(__builtin_equal_types(x, y))
> >   {
> >   }
> > else
> >   {
> >   }
> 
> thought about it.  like it.  nice and clean.
> 
> is everyone ok with this approach?  it's pretty.  it's got
> documentation.  it's got a test case. :)

Doesn't your patch still have the char->int promotion problem?
What does _builtin_equal_types(ch, i) return for variables that
are char and int, respectively?

Also, in honor of GCC's Lispy origins, it should be called
__builtin_equal_types_p . (Just kidding!)

Stan


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