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From: "xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/103559] Can't optimize away < 0 check on sqrt
Date: Thu, 30 Mar 2023 10:40:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103559

Xi Ruoyao <xry111 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xry111 at gcc dot gnu.org

--- Comment #8 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #7)
> The HW sqrt certainly handles NAN input by returning NAN output, the
> question is if it is required to set some errno in that case as well or n=
ot.
> One would need to check what different libcs do in that case.

Glibc sets EDOM:
https://sourceware.org/git/?p=3Dglibc.git;a=3Dblob;f=3Dmath/w_sqrt_template=
.c=