From: "Koning, Paul" <Paul.Koning@dell.com>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Aldy Hernandez <aldyh@redhat.com>, GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH] Handle > INF and < INF correctly in range-op-float.cc
Date: Tue, 6 Sep 2022 12:38:09 +0000 [thread overview]
Message-ID: <85F67A1E-44C1-4103-8ABC-11E9614ABE81@dell.com> (raw)
In-Reply-To: <Yxc30McbGnzIygNX@tucnak>
> On Sep 6, 2022, at 8:06 AM, Jakub Jelinek via Gcc-patches <gcc-patches@gcc.gnu.org> wrote:
>
> On Tue, Sep 06, 2022 at 01:47:43PM +0200, Aldy Hernandez wrote:
>> Question...for !HONOR_NANS or !HONOR_INFINITIES or whatever, say the
>> range for the domain is [-MIN, +MAX] for the min and max representable
>> numbers. What happens for MAX+1? Is that undefined? I wonder what
>> real.cc does for that.
>
> I'm afraid I have no idea.
>
> The formats without Inf/NaN are:
> spu_single_format
> vax_{f,d,g}_format
> arm_half_format
Actually, DEC (VAX and PDP-11) float does have NaN; signaling NaN to be precise.
paul
prev parent reply other threads:[~2022-09-06 12:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-06 7:29 Aldy Hernandez
2022-09-06 7:35 ` Jakub Jelinek
2022-09-06 7:40 ` Aldy Hernandez
2022-09-06 7:44 ` Jakub Jelinek
2022-09-06 7:49 ` Aldy Hernandez
2022-09-06 7:59 ` Jakub Jelinek
2022-09-06 11:47 ` Aldy Hernandez
2022-09-06 12:06 ` Jakub Jelinek
2022-09-06 12:17 ` Richard Biener
2022-09-06 12:32 ` Aldy Hernandez
2022-09-06 12:38 ` Koning, Paul [this message]
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