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Re: gcc.c-torture/execute/20010114-2.c
- To: Joern Rennecke <amylaar at cambridge dot redhat dot com>
- Subject: Re: gcc.c-torture/execute/20010114-2.c
- From: Franz Sirl <Franz dot Sirl-kernel at lauterbach dot com>
- Date: Thu, 12 Apr 2001 23:30:58 +0200
- Cc: amylaar at cambridge dot redhat dot com (Joern Rennecke),gcc-bugs at gcc dot gnu dot org
- References: <01040902015901.12074@enzo.bigblue.local>
At 21:03 09.04.2001, Joern Rennecke wrote:
> > > I think the gcc.c-torture/execute/20010114-2.c test is invalid,
> because it
> > > will fail if you have excess precision in intermediate calculations, or
> > > if you just have a float implementation with more than the minimal
> > > precision required.
> >
> > I'm not sure. On PPC it gets calculated with extra precision as well
> and it
> > works as only exactly representable numbberss are used, but I have no
> problem
> > restricting the test to some platforms.
>
>The rintf founction relies on rounding error to do its work. When more
>than 23 bit precision comes into play, the argument is returned unchanged.
Hmm, since I don't know if the test will still trigger the bug on PPC with
-ffloat-store, OK to move the test to the ieee dir and copy it to gcc.dg
restricted to PPC?
Franz.