Date: Thu, 18 Feb 2021 18:13:50 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 253313] lib/msun: hypotl(3) mishandles subnormal numbers Message-ID: <bug-253313-227-u0J3iJ9hFA@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-253313-227@https.bugs.freebsd.org/bugzilla/> References: <bug-253313-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253313 --- Comment #6 from commit-hook@FreeBSD.org --- A commit in branch stable/13 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D97232b0dc03146c0e6466a4886edaaca4= f95c3a7 commit 97232b0dc03146c0e6466a4886edaaca4f95c3a7 Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2021-02-10 22:28:43 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2021-02-18 18:08:27 +0000 Fix incorrect hypotl(3) result with subnormal numbers This adjusts the factor used to scale the subnormal numbers, so it becomes the right value after adjusting its exponent. Thanks to Steve Kargl for finding the most elegant fix. Also enable the hypot tests, and add a test case for this bug. PR: 253313 (cherry picked from commit d3338f3355a612cf385632291f46c5777bba8d18) Fix lib/msun/test builds on platforms without 80-bit long doubles After d3338f3355a612cf385632291f46c5777bba8d18, the lib/msun test case 'hypotl_near_underflow' would fail to compile on platforms where long doubles weren't 80 bit, like on x86. Disable this particular test on such platforms for now. PR: 253313 (cherry picked from commit 25120662284466ecef976df8f86e97bafdedf991) contrib/netbsd-tests/lib/libm/t_hypot.c | 24 ++++++++++++++++++++++++ lib/msun/src/e_hypotl.c | 2 +- lib/msun/tests/Makefile | 1 + 3 files changed, 26 insertions(+), 1 deletion(-) --=20 You are receiving this mail because: You are the assignee for the bug.=
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