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| author | Joseph Myers <joseph@codesourcery.com> | 2015-04-08 17:14:12 +0000 |
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| committer | Joseph Myers <joseph@codesourcery.com> | 2015-04-08 17:14:12 +0000 |
| commit | ae63c7ebedcaa57017df4cb8ff0494a4705321ee (patch) | |
| tree | 4f2b413430bffe2a9c5354c5bd4e731106d7b832 /math/s_cacoshf.c | |
| parent | d5856d06c3ef62907f2865c502ada4baf3c9efa1 (diff) | |
| download | glibc-ae63c7ebedcaa57017df4cb8ff0494a4705321ee.tar.gz glibc-ae63c7ebedcaa57017df4cb8ff0494a4705321ee.tar.xz glibc-ae63c7ebedcaa57017df4cb8ff0494a4705321ee.zip | |
Fix dbl-64 atan in non-default rounding modes (bug 18197).
The dbl-64 implementation of atan does computations that expect to run in round-to-nearest mode, and in other modes the errors can accumulate to more than the maximum accepted 9ulp. This patch makes it use FE_TONEAREST internally, similar to other functions with such issues. Tested for x86_64 and x86; no ulps updates needed. [BZ #18197] * sysdeps/ieee754/dbl-64/s_atan.c: Include <fenv.h>. (atan): Set FE_TONEAREST mode for internal computations. * math/auto-libm-test-in: Add more tests of atan. * math/auto-libm-test-out: Regenerated.
Diffstat (limited to 'math/s_cacoshf.c')
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