On Tue, Dec 06, 2022 at 04:03:35PM +0100, Jakub Jelinek wrote:
> On Tue, Dec 06, 2022 at 08:56:09AM -0600, Segher Boessenkool wrote:
> > > In the past, _Float128 was a C extended type,
> > > but now it is a part of the C/C++ 2x standards.
> >
> > Only if you select a new enough -std=, it still is an extended type if
> > not?
>
> No, as an extension _Float{16,32,64,128}{,x} are available (where the backend
> has support for such IEEE format) even in older C or C++ modes,
> similarly the {f,F}{16,32,64,128} suffixes on literals (with pedwarn
> on everything but C++23). In C++ it is in all language modes treated as
> distinct type from __float128, and _FloatNN is handled as extended floating
> point type per C++23 rules, while __float128 is not.
Right, so there is no "in the past" here, the actual situation is quite
different.
Reviewing these patches is harder and a lot more work than writing them
can ever have been :-( :-( :-(
Segher
