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| author | Joseph Myers <joseph@codesourcery.com> | 2014-05-14 12:37:24 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2014-05-14 12:37:24 +0000 |
| commit | 01dbacd22a8d5e0053f8d0cf13a80286b6cfe79b (patch) | |
| tree | 91adc1f6c05cc5dbfb6b3b55b7500fa9dae9fd0e /NEWS | |
| parent | 913d03c864ea2547e97f8d2d30fc71a008d4d103 (diff) | |
| download | glibc-01dbacd22a8d5e0053f8d0cf13a80286b6cfe79b.tar.gz glibc-01dbacd22a8d5e0053f8d0cf13a80286b6cfe79b.tar.xz glibc-01dbacd22a8d5e0053f8d0cf13a80286b6cfe79b.zip | |
Fix cacos (+Inf + finite*i) in round-downward mode (bug 16928).
According to C99/C11 Annex G, cacos applied to a value with real part +Inf and finite imaginary part should produce a result with real part +0. glibc wrongly produces a result with real part -0 in FE_DOWNWARD mode. This patch fixes this by checking for zero results in the relevant case of non-finite arguments (where there should never be a result with -0 real part), and converts the tests of cacos to ALL_RM_TEST. Tested x86_64 and x86 and ulps updated accordingly. [BZ #16928] * math/s_cacos.c (__cacos): Ensure zero real part of result from non-finite arguments is +0. * math/s_cacosf.c (__cacosf): Likewise. * math/s_cacosl.c (__cacosl): Likewise. * math/libm-test.inc (cacos_test): Use ALL_RM_TEST. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/NEWS b/NEWS index 974d2c80a9..de9e8a280e 100644 --- a/NEWS +++ b/NEWS @@ -17,7 +17,7 @@ Version 2.20 16713, 16714, 16731, 16739, 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16854, 16876, 16877, 16885, 16888, 16890, 16912, 16916, 16922, - 16927, 16932. + 16927, 16928, 16932. * The minimum Linux kernel version that this version of the GNU C Library can be used with is 2.6.32. |