From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 6D6B73858CDA; Sat, 3 Jun 2023 15:13:22 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6D6B73858CDA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1685805202; bh=iItyvnZT3Q0Bo/PX+EzTZ8/LPY5T/FIRZAWg6CkbBp8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=E2H3fBgBvpr5Nfd3RwKKQ/tzZBJgLDMG2B1sq3PhtIvFi0Yqsw/6b5ncPbLenZLWz Mny8R9uNPH5AAweq7W7/YamwGBRx/P7i1pdDmVGiA4EBdz+UCyuGKX3WZgrNOo4eOk jtbNFsfy/tiJlWITwnhFqXj1yZGtK78SJVcQwBRk= From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/109924] missing __builtin_nanf16b Date: Sat, 03 Jun 2023 15:13:21 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: 13.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: WONTFIX X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status resolution Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109924 Jakub Jelinek changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |WONTFIX --- Comment #4 from Jakub Jelinek --- I certainly don't see that stated there anywhere. Furthermore, _Float16 and __bf16 are nothing but normal FP types, there is = to this date no C library support for those formats, and at least for the latt= er the only hw support which appears are better or worse instructions to conve= rt those to float and back. So, bfloat16_t support is really done using float math library functions and builtins, and as I said the only builtins which were added were the really required o= ne to be able to constexpr evaluate what C++23 mandates.=