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| author | Joseph Myers <joseph@codesourcery.com> | 2015-09-15 17:46:08 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-09-15 17:46:08 +0000 |
| commit | 0b87419b690d1711697ed95808527400910ff997 (patch) | |
| tree | 95c2f39d1c562fc25437dfb20faefbb097e094ef /math/auto-libm-test-in | |
| parent | 694aabefd2eb3a0e2c5624d7feb1d7310b2bdd8b (diff) | |
| download | glibc-0b87419b690d1711697ed95808527400910ff997.zip glibc-0b87419b690d1711697ed95808527400910ff997.tar.gz glibc-0b87419b690d1711697ed95808527400910ff997.tar.bz2 | |
Fix ctan, ctanh missing underflows (bug 18595).
Similar to various other bugs in this area, ctan and ctanh can fail to
raise the underflow exception for some cases of results that are tiny
and inexact. This patch forces the exception in a similar way to
previous fixes.
Tested for x86_64 and x86.
[BZ #18595]
* math/s_ctan.c (__ctan): Force underflow exception for results
whose real or imaginary part has small absolute value.
* math/s_ctanf.c (__ctanf): Likewise.
* math/s_ctanh.c (__ctanh): Likewise.
* math/s_ctanhf.c (__ctanhf): Likewise.
* math/s_ctanhl.c (__ctanhl): Likewise.
* math/s_ctanl.c (__ctanl): Likewise.
* math/auto-libm-test-in: Do not allow missing underflow for ctan
and ctanh. Add more tests of ctan and ctanh.
Diffstat (limited to 'math/auto-libm-test-in')
| -rw-r--r-- | math/auto-libm-test-in | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in index 4a8017c..8e236c3 100644 --- a/math/auto-libm-test-in +++ b/math/auto-libm-test-in @@ -1245,11 +1245,14 @@ ctan 0x1.921fb6p+0 0x1p-149 ctan 0x1.921fb54442d18p+0 0x1p-1074 ctan 0x1.921fb54442d1846ap+0 0x1p-16445 -# Bug 18595: underflow exception may be missing -ctan min 0 missing-underflow -ctan -min 0 missing-underflow -ctan min_subnorm 0 missing-underflow -ctan -min_subnorm 0 missing-underflow +ctan min 0 +ctan -min 0 +ctan min_subnorm 0 +ctan -min_subnorm 0 +ctan 0 min +ctan 0 -min +ctan 0 min_subnorm +ctan 0 -min_subnorm ctanh 0 0 ctanh 0 -0 @@ -1285,11 +1288,14 @@ ctanh 0x1p-149 0x1.921fb6p+0 ctanh 0x1p-1074 0x1.921fb54442d18p+0 ctanh 0x1p-16445 0x1.921fb54442d1846ap+0 -# Bug 18595: underflow exception may be missing -ctanh 0 min missing-underflow -ctanh 0 -min missing-underflow -ctanh 0 min_subnorm missing-underflow -ctanh 0 -min_subnorm missing-underflow +ctanh 0 min +ctanh 0 -min +ctanh 0 min_subnorm +ctanh 0 -min_subnorm +ctanh min 0 +ctanh -min 0 +ctanh min_subnorm 0 +ctanh -min_subnorm 0 erf 0 erf -0 |