diff options
| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2016-07-18 22:33:09 +0530 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2016-11-02 09:10:28 +0100 |
| commit | 422facff9f2c4972e2dc46090a704d11b840b0c0 (patch) | |
| tree | 89f458f6cba4e6b9336480f520b93aa12d058831 /debug/fortify_fail.c | |
| parent | 6ab1e91474c0faab25a568436b846c2630624039 (diff) | |
| download | glibc-422facff9f2c4972e2dc46090a704d11b840b0c0.tar.gz | |
Fix cos computation for multiple precision fallback (bz #20357)
During the sincos consolidation I made two mistakes, one was a logical
error due to which cos(0x1.8475e5afd4481p+0) returned
sin(0x1.8475e5afd4481p+0) instead.
The second issue was an error in negating inputs for the correct
quadrants for sine. I could not find a suitable test case for this
despite running a program to search for such an input for a couple of
hours.
Following patch fixes both issues. Tested on x86_64. Thanks to Matt
Clay for identifying the issue.
[BZ #20357]
* sysdeps/ieee754/dbl-64/s_sin.c (sloww): Fix up condition
to call __mpsin/__mpcos and to negate values.
* math/auto-libm-test-in: Add test.
* math/auto-libm-test-out: Regenerate.
(cherry picked from commit cbf88869edced4b23d792d95a8626e35b831df35)
Diffstat (limited to 'debug/fortify_fail.c')
0 files changed, 0 insertions, 0 deletions