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| author | Joseph Myers <joseph@codesourcery.com> | 2015-11-05 21:23:07 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-11-05 21:23:07 +0000 |
| commit | 939fdd1c36dde8884543bc9c3b8506e76c9ff0e4 (patch) | |
| tree | f2a5ec7b8209beb361b21fe0de8aede38549ec6c /math/test-signgam-finite-c11.c | |
| parent | f248238cf43bd751db29e6f151d6da7645337ff5 (diff) | |
Fix finite-math-only lgamma functions signgam setting (bug 19211).
The lgamma inline functions in bits/math-finite.h do not set signgam
if __USE_ISOC99, even when other feature test macros mean a standard
such as XSI POSIX is selected for which it should be set. (This is
essentially the opposite issue to bug 15421, the out-of-line versions
setting signgam even when they shouldn't.)
This patch fixes those functions to use __USE_MISC || __USE_XOPEN as
the condition for when to set signgam, since it's the condition for
when math.h declares signgam. The legacy gamma* names are only
declared at all if __USE_MISC || __USE_XOPEN, so they just set signgam
unconditionally.
Tests for certain standards or not using _GNU_SOURCE cannot use
test-skeleton.c (this is a known issue noted on the wiki todo list).
Thus, the new tests that signgam remains not set in ISO C modes do not
use test-skeleton.c. They also define _ISOMAC to avoid running into
declarations in the internal include/ headers that only work in
_GNU_SOURCE mode.
Tested for x86_64 and x86.
[BZ #19211]
* math/bits/math-finite.h (lgamma): Set signgam if [__USE_MISC ||
__USE_XOPEN], not if [!__USE_ISOC99].
(lgammaf): Likewise.
(lgammal): Likewise.
(gamma): Set signgam unconditionally, not if [!__USE_ISOC99].
(gammaf): Likewise.
(gammal): Likewise.
* math/test-signgam-finite-c11.c: New file.
* math/test-signgam-finite-c99.c: Likewise.
* math/test-signgam-finite.c: Likewise.
* math/Makefile (tests): Add test-signgam-finite,
test-signgam-finite-c99 and test-signgam-finite-c11.
(CFLAGS-test-signgam-finite.c): New variable.
(CFLAGS-test-signgam-finite-c99.c): Likewise.
(CFLAGS-test-signgam-finite-c11.c): Likewise.
Diffstat (limited to 'math/test-signgam-finite-c11.c')
| -rw-r--r-- | math/test-signgam-finite-c11.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/math/test-signgam-finite-c11.c b/math/test-signgam-finite-c11.c new file mode 100644 index 0000000000..dff132df93 --- /dev/null +++ b/math/test-signgam-finite-c11.c @@ -0,0 +1 @@ +#include "test-signgam-finite-c99.c" |