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| author | Victor Stinner <victor.stinner@haypocalc.com> | 2011-05-09 10:45:41 (GMT) |
|---|---|---|
| committer | Victor Stinner <victor.stinner@haypocalc.com> | 2011-05-09 10:45:41 (GMT) |
| commit | 8f9f8d612a1ee264a465f493b1ce6215418128de (patch) | |
| tree | 932bbe3ba95806fc499f853fe25c2ec3726c6afa /configure.in | |
| parent | 936d518dc8fb8fb094de1391d5a0703287db694e (diff) | |
| download | cpython-8f9f8d612a1ee264a465f493b1ce6215418128de.zip cpython-8f9f8d612a1ee264a465f493b1ce6215418128de.tar.gz cpython-8f9f8d612a1ee264a465f493b1ce6215418128de.tar.bz2 | |
Issue #11888: Use system log2() when available
I expect the system libc to use more accurate functions than Python. The GNU
libc uses for example FYL2X and FYL2XP1 hardware instructions on Intel FPU.
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/configure.in b/configure.in index 49864f4..c6a9437 100644 --- a/configure.in +++ b/configure.in @@ -2512,7 +2512,7 @@ AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \ futimens futimes \ gai_strerror getgroups getlogin getloadavg getpeername getpgid getpid \ getpriority getresuid getresgid getpwent getspnam getspent getsid getwd \ - initgroups kill killpg lchmod lchown lockf linkat lstat lutimes mbrtowc mkdirat mkfifo \ + initgroups kill killpg lchmod lchown lockf log2 linkat lstat lutimes mbrtowc mkdirat mkfifo \ mkfifoat mknod mknodat mktime mremap nice openat pathconf pause plock poll \ posix_fallocate posix_fadvise pread \ pthread_init pthread_kill putenv pwrite readlink readlinkat readv realpath renameat \ @@ -3368,7 +3368,7 @@ LIBS_SAVE=$LIBS LIBS="$LIBS $LIBM" AC_CHECK_FUNCS([acosh asinh atanh copysign erf erfc expm1 finite gamma]) -AC_CHECK_FUNCS([hypot lgamma log1p round tgamma]) +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 |