about summary refs log tree commit diff
path: root/math/s_catanhf.c
Commit message (Collapse)AuthorAgeFilesLines
* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
|
* Fix catan, catanh, __ieee754_logf in round-downward mode (bug 16799, bug 16800).Joseph Myers2014-04-021-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes incorrect results from catan and catanh of certain special inputs in round-downward mode (bug 16799), and incorrect results of __ieee754_logf (+/-0) in round-downward mode (bug 16800) that show up through catan/catanh when tested in all rounding modes, but not directly in the testing for logf because the bug gets hidden by the wrappers. Both bugs involve a zero that should be +0 being -0 instead: one computed as (1-x)*(1+x) in the catan/catanh case, and one as (x-x) in the logf case. The fixes ensure positive zero is used. Testing of catan and catanh in all rounding modes is duly enabled. I expect there are various other bugs in special cases in __ieee754_* functions that are normally hidden by the wrappers but would show up for testing with -lieee (or in future with -fno-math-errno if we replace -lieee and _LIB_VERSION with compile-time redirection to new *_noerrno symbol names). Tested x86_64 and x86 and ulps updated accordingly. [BZ #16799] [BZ #16800] * math/s_catan.c (__catan): Avoid passing -0 denominator to atan2 with 0 numerator. * math/s_catanf.c (__catanf): Likewise. * math/s_catanh.c (__catanh): Likewise. * math/s_catanhf.c (__catanhf): Likewise. * math/s_catanhl.c (__catanhl): Likewise. * math/s_catanl.c (__catanl): Likewise. * sysdeps/ieee754/flt-32/e_logf.c (__ieee754_logf): Always divide by positive zero when computing -Inf result. * math/libm-test.inc (catan_test): Use ALL_RM_TEST. (catanh_test): Likewise. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Use glibc_likely instead __builtin_expect.Ondřej Bílka2014-02-101-2/+2
|
* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
|
* Fix catan, catanh spurious underflows (bug 15423).Joseph Myers2013-05-011-16/+26
|
* Fix catan, catanh inaccuracy from atan2 denominators near 0 (bug 15416).Joseph Myers2013-04-301-1/+19
|
* Fix catan, catanh spurious overflows (bug 15409).Joseph Myers2013-04-271-15/+33
|
* Fix catan, catanh missing underflows (bug 15406).Joseph Myers2013-04-261-1/+12
|
* Use suffixed floating-point constants in float and long double catan/catanh.Joseph Myers2013-04-241-7/+7
|
* Fix catan, catanh inaccuracy through use of log (bug 15394).Joseph Myers2013-04-241-1/+8
|
* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-021-1/+1
|
* Replace FSF snail mail address with URLs.Paul Eggert2012-02-091-3/+2
|
* Add branch predictions to complex math codeUlrich Drepper2011-10-221-9/+6
|
* Use private math_private.h in files in math/Ulrich Drepper2011-10-081-1/+1
|
* Moved to csu/errno-loc.c.Ulrich Drepper2005-12-141-0/+82
|
* (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.Ulrich Drepper2004-12-221-82/+0
|
* 2.5-18.1Jakub Jelinek2007-07-121-0/+82