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Re: [lmi] Unit test for C99 round()
From: |
Greg Chicares |
Subject: |
Re: [lmi] Unit test for C99 round() |
Date: |
Tue, 03 Jun 2008 22:54:11 +0000 |
User-agent: |
Thunderbird 2.0.0.14 (Windows/20080421) |
On 2008-06-03 18:33Z, Vadim Zeitlin wrote:
> On Tue, 03 Jun 2008 16:34:26 +0000 Greg Chicares <address@hidden> wrote:
>
> GC> Would you please run the new 'round_test' on GNU/Linux,
>
> Thanks for adding it to Makefile.am BTW!
>
> GC> - without modification; and
> GC> - with the patch below [1];
> GC> and describe its results here?
>
> The result is the same in both cases:
>
> % ./test_round
[...]
> .... 1128 tests succeeded
> no errors detected
>
> So glibc (version 2.3.6) seems to be ok too.
Great, thanks.
> I didn't test under x86 (this was under amd64) but can also rebuild LMI in
> chroot if you think it's going to be useful.
Thanks, but that's not necessary. I just wanted to be sure
this unit test and the code it was written to test hadn't
co-evolved in such a way that no other implementation could
hope to pass all the tests. And I think the algorithm we
chose is unusual enough that no one else would be using it.
(FRNDINT with both RC bits = 0 gives the right answer in all
cases except for a sparse point set, so detect and adjust
only those points--transforming the hardware's unbiased
rounding into the degenerate thing C99 7.12.9.6 requires.)
- [lmi] Unit test for C99 round(), Greg Chicares, 2008/06/03
- Re: [lmi] Unit test for C99 round(), Vadim Zeitlin, 2008/06/03
- Re: [lmi] Unit test for C99 round(),
Greg Chicares <=
- Re[2]: [lmi] Unit test for C99 round(), Vadim Zeitlin, 2008/06/03
- Re: [lmi] Unit test for C99 round(), Greg Chicares, 2008/06/03
- Re[2]: [lmi] Unit test for C99 round(), Vadim Zeitlin, 2008/06/04
- Re: [lmi] Unit test for C99 round(), Greg Chicares, 2008/06/04
- Re[2]: [lmi] Unit test for C99 round(), Vadim Zeitlin, 2008/06/04
- Re: [lmi] Unit test for C99 round(), Greg Chicares, 2008/06/04
- Re[2]: [lmi] Unit test for C99 round(), Vadim Zeitlin, 2008/06/05
- Re: [lmi] Unit test for C99 round(), Greg Chicares, 2008/06/06
- Re[2]: [lmi] Unit test for C99 round(), Vadim Zeitlin, 2008/06/12
- Re: [lmi] Unit test for C99 round(), Greg Chicares, 2008/06/17