diff options
| -rw-r--r-- | Lib/test/test_cmath.py | 2 | ||||
| -rw-r--r-- | Lib/test/test_math.py | 2 | ||||
| -rwxr-xr-x | configure | 47 | ||||
| -rw-r--r-- | configure.ac | 27 | ||||
| -rw-r--r-- | pyconfig.h.in | 3 |
5 files changed, 0 insertions, 81 deletions
diff --git a/Lib/test/test_cmath.py b/Lib/test/test_cmath.py index 0451fb0aa2..43a074b4b6 100644 --- a/Lib/test/test_cmath.py +++ b/Lib/test/test_cmath.py @@ -577,8 +577,6 @@ class CMathTests(unittest.TestCase): self.assertTrue(cmath.isinf(complex(INF, NAN))) @requires_IEEE_754 - @unittest.skipIf(sysconfig.get_config_var('TANH_PRESERVES_ZERO_SIGN') == 0, - "system tanh() function doesn't copy the sign") def testTanhSign(self): for z in complex_zeros: self.assertComplexIdentical(cmath.tanh(z), z) diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py index 608789f720..9b2f55e1f4 100644 --- a/Lib/test/test_math.py +++ b/Lib/test/test_math.py @@ -1355,8 +1355,6 @@ class MathTests(unittest.TestCase): self.assertTrue(math.isnan(math.tanh(NAN))) @requires_IEEE_754 - @unittest.skipIf(sysconfig.get_config_var('TANH_PRESERVES_ZERO_SIGN') == 0, - "system tanh() function doesn't copy the sign") def testTanhSign(self): # check that tanh(-0.) == -0. on IEEE 754 systems self.assertEqual(math.tanh(-0.), -0.) @@ -14163,53 +14163,6 @@ cat >>confdefs.h <<_ACEOF _ACEOF -# On FreeBSD 6.2, it appears that tanh(-0.) returns 0. instead of -# -0. on some architectures. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether tanh preserves the sign of zero" >&5 -$as_echo_n "checking whether tanh preserves the sign of zero... " >&6; } -if ${ac_cv_tanh_preserves_zero_sign+:} false; then : - $as_echo_n "(cached) " >&6 -else - -if test "$cross_compiling" = yes; then : - ac_cv_tanh_preserves_zero_sign=no -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ - -#include <math.h> -#include <stdlib.h> -int main() { - /* return 0 if either negative zeros don't exist - on this platform or if negative zeros exist - and tanh(-0.) == -0. */ - if (atan2(0., -1.) == atan2(-0., -1.) || - atan2(tanh(-0.), -1.) == atan2(-0., -1.)) exit(0); - else exit(1); -} - -_ACEOF -if ac_fn_c_try_run "$LINENO"; then : - ac_cv_tanh_preserves_zero_sign=yes -else - ac_cv_tanh_preserves_zero_sign=no -fi -rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ - conftest.$ac_objext conftest.beam conftest.$ac_ext -fi - -fi - -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_tanh_preserves_zero_sign" >&5 -$as_echo "$ac_cv_tanh_preserves_zero_sign" >&6; } -if test "$ac_cv_tanh_preserves_zero_sign" = yes -then - -$as_echo "#define TANH_PRESERVES_ZERO_SIGN 1" >>confdefs.h - -fi -LIBS=$LIBS_SAVE - # For multiprocessing module, check that sem_open # actually works. For FreeBSD versions <= 7.2, # the kernel module that provides POSIX semaphores diff --git a/configure.ac b/configure.ac index 4b34bad35a..a985ec2b00 100644 --- a/configure.ac +++ b/configure.ac @@ -4359,33 +4359,6 @@ AC_CHECK_FUNCS([acosh asinh atanh copysign erf erfc expm1 finite gamma]) AC_CHECK_FUNCS([hypot lgamma log1p log2 round tgamma]) AC_CHECK_DECLS([isinf, isnan, isfinite], [], [], [[#include <math.h>]]) -# On FreeBSD 6.2, it appears that tanh(-0.) returns 0. instead of -# -0. on some architectures. -AC_MSG_CHECKING(whether tanh preserves the sign of zero) -AC_CACHE_VAL(ac_cv_tanh_preserves_zero_sign, [ -AC_RUN_IFELSE([AC_LANG_SOURCE([[ -#include <math.h> -#include <stdlib.h> -int main() { - /* return 0 if either negative zeros don't exist - on this platform or if negative zeros exist - and tanh(-0.) == -0. */ - if (atan2(0., -1.) == atan2(-0., -1.) || - atan2(tanh(-0.), -1.) == atan2(-0., -1.)) exit(0); - else exit(1); -} -]])], -[ac_cv_tanh_preserves_zero_sign=yes], -[ac_cv_tanh_preserves_zero_sign=no], -[ac_cv_tanh_preserves_zero_sign=no])]) -AC_MSG_RESULT($ac_cv_tanh_preserves_zero_sign) -if test "$ac_cv_tanh_preserves_zero_sign" = yes -then - AC_DEFINE(TANH_PRESERVES_ZERO_SIGN, 1, - [Define if tanh(-0.) is -0., or if platform doesn't have signed zeros]) -fi -LIBS=$LIBS_SAVE - # For multiprocessing module, check that sem_open # actually works. For FreeBSD versions <= 7.2, # the kernel module that provides POSIX semaphores diff --git a/pyconfig.h.in b/pyconfig.h.in index 51e9213826..360f79994f 100644 --- a/pyconfig.h.in +++ b/pyconfig.h.in @@ -1419,9 +1419,6 @@ (which you can't on SCO ODT 3.0). */ #undef SYS_SELECT_WITH_SYS_TIME -/* Define if tanh(-0.) is -0., or if platform doesn't have signed zeros */ -#undef TANH_PRESERVES_ZERO_SIGN - /* Library needed by timemodule.c: librt may be needed for clock_gettime() */ #undef TIMEMODULE_LIB |