From: "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu>
To: aoliva@redhat.com
Cc: gcc-bugs@gcc.gnu.org, gcc-patches@gcc.gnu.org, gcc@gcc.gnu.org,
libstdc++@gcc.gnu.org, oldham@codesourcery.com,
ro@TechFak.Uni-Bielefeld.DE, rth@redhat.com
Subject: Re: Irix6 long doubles implemented wrong? (27_io/ostream_inserter_arith)
Date: Mon, 03 Feb 2003 15:18:00 -0000 [thread overview]
Message-ID: <200302031518.KAA29308@caip.rutgers.edu> (raw)
In-Reply-To: <oru1flo6nz.fsf@free.redhat.lsd.ic.unicamp.br>
> From: Alexandre Oliva <aoliva@redhat.com>
>
> On Jan 30, 2003, "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu> wrote:
>
> >> From: Richard Henderson <rth@redhat.com>
> >> >
> >> > unordtf2_libfunc
> >>
> >> This one may be a problem. We don't know what the actual
> >> return values are for the comparison functions. By rights
> >> it ought to be a tri-state value off of EQ or NE.
>
> > I'm not sure what you mean. Are you saying that all the gcc
> > comparison functions are tri-state (-1,0,1) or just the unord one?
>
> There is L_compare_[sdt]f, that is tri-state, but none of the others
> are, it's just that you sometimes can't distinguish unord from false
> on the others, such as those of gofast. If there's no equivalent to
> the tri-state compare on IRIX, just set the corresponding entry in
> optabs NULL, and GCC will find other ways to implement it, using eq,
> ne, gt, ge, lt and le.
Sorry, I'm seeing something different. First looking at fp-bit.c, all
of the comparison ops (e.g. _eq_f2) call __fpcmp_parts which returns a
tri-state value. I.e. it's not just L_compare_[sdt]f.
Second, looking at prepare_float_lib_cmp in optabs.c if the optabs are
NULL, it'll only swap GE <-> LE and GT <-> LT in both directions. So
if at least one or the other isn't defined how will it work?
Anyway, I just found FLOAT_LIB_COMPARE_RETURNS_BOOL in tm.texi which,
judging by the name, appears to be exactly what I need. :-)
--Kaveh
--
Kaveh R. Ghazi ghazi@caip.rutgers.edu
next prev parent reply other threads:[~2003-02-03 15:18 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-14 14:09 Kaveh R. Ghazi
2002-12-16 9:24 ` Rainer Orth
2002-12-16 9:51 ` Alexandre Oliva
2002-12-16 9:52 ` Rainer Orth
2002-12-16 12:23 ` Eric Christopher
2002-12-16 21:58 ` Kaveh R. Ghazi
2002-12-21 10:45 ` Alexandre Oliva
2002-12-22 6:02 ` Kaveh R. Ghazi
2002-12-22 10:24 ` Alexandre Oliva
2002-12-22 10:35 ` Alexandre Oliva
2002-12-23 9:46 ` Alexandre Oliva
2002-12-24 11:07 ` Kaveh R. Ghazi
2002-12-25 8:04 ` Alexandre Oliva
2002-12-26 13:48 ` Alexandre Oliva
2002-12-27 7:06 ` Alexandre Oliva
2002-12-29 0:22 ` Kaveh R. Ghazi
2002-12-29 6:06 ` Alexandre Oliva
2003-01-07 22:57 ` Richard Henderson
2003-01-08 18:16 ` Alexandre Oliva
2003-01-08 22:19 ` Richard Henderson
2003-01-09 9:29 ` Alexandre Oliva
2003-01-09 9:38 ` Alexandre Oliva
2003-01-10 1:18 ` Alexandre Oliva
2003-01-10 2:29 ` Richard Henderson
2003-01-19 21:02 ` Kaveh R. Ghazi
2003-01-19 22:15 ` Alexandre Oliva
2003-01-26 13:00 ` Alexandre Oliva
2003-01-28 17:32 ` Alexandre Oliva
2003-01-28 23:38 ` Alexandre Oliva
2003-01-26 15:20 ` Alexandre Oliva
2003-01-26 16:14 ` Alexandre Oliva
2003-01-26 18:40 ` Kaveh R. Ghazi
2003-01-26 21:24 ` Kaveh R. Ghazi
2003-01-26 21:25 ` Alexandre Oliva
2003-01-27 9:17 ` Kaveh R. Ghazi
2003-01-27 10:40 ` Alexandre Oliva
2003-01-28 4:52 ` Kaveh R. Ghazi
2003-01-28 17:31 ` Alexandre Oliva
2003-01-28 19:11 ` Kaveh R. Ghazi
2003-01-28 19:23 ` Kaveh R. Ghazi
2003-01-28 19:47 ` Rainer Orth
[not found] ` <15926.49701.3! 59482.666471@xayide.TechFak.Uni-Bielefeld.DE>
2003-01-29 6:56 ` Kaveh R. Ghazi
2003-01-29 10:07 ` Richard Henderson
2003-01-29 13:39 ` Alexandre Oliva
2003-01-29 17:26 ` Kaveh R. Ghazi
2003-01-29 18:10 ` Richard Henderson
2003-01-30 23:31 ` Irix6 native long double libcalls progress report (and problem) Kaveh R. Ghazi
2003-01-30 23:49 ` Richard Henderson
2003-02-03 13:22 ` Alexandre Oliva
2003-01-30 8:05 ` Irix6 long doubles implemented wrong? (27_io/ostream_inserter_arith) Kaveh R. Ghazi
2003-02-03 13:07 ` Alexandre Oliva
2003-02-03 15:18 ` Kaveh R. Ghazi [this message]
2003-02-03 16:37 ` Alexandre Oliva
2003-01-27 10:41 ` Alexandre Oliva
2003-01-26 21:54 ` Richard Henderson
2003-01-10 1:37 ` Alexandre Oliva
2003-01-26 10:07 ` Alexandre Oliva
2003-01-26 10:42 ` Alexandre Oliva
2003-01-26 10:45 ` Alexandre Oliva
2003-01-26 10:53 ` Alexandre Oliva
2003-01-26 12:07 ` Alexandre Oliva
2003-01-26 12:20 ` Alexandre Oliva
2003-01-26 12:50 ` Alexandre Oliva
2002-12-24 18:15 ` Kaveh R. Ghazi
2003-01-07 22:16 ` Richard Henderson
2003-01-07 22:40 ` Richard Henderson
2003-01-08 18:04 ` Alexandre Oliva
2003-01-08 22:29 ` Richard Henderson
2003-01-08 22:46 ` Zack Weinberg
2003-01-08 23:13 ` Richard Henderson
2003-01-09 7:27 ` Alexandre Oliva
2002-12-17 0:18 Billinghurst, David (CRTS)
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