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Re: new __builtin_choose_type (patch) (newbuiltin_equal_types patch)


On Wed, 2001-10-03 at 23:30, Stan Shebs wrote:
> 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?

seems to be working now.  so i guess it's ready for approval :)

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

:)


> 
> Stan
-- 
Aldy Hernandez					E-mail: aldyh@redhat.com
Professional Gypsy on a Motorcycle
Red Hat, Inc.


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