diff options
author | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-04-22 07:33:18 +0000 |
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committer | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-04-22 07:33:18 +0000 |
commit | 4eba34451749f684aeb9df41acacc0475b0b071e (patch) | |
tree | a0e150a608a054a2e7bbc4f572ca528aad165b96 /configure.in | |
parent | e102f56340d50a2459312df876eb3010cc4b92ef (diff) |
merge revision(s) 49913,54492,54494,54495,54496,54499,54503: [Backport #12249]
math.c: fix tgamma on mingw
* math.c (mingw_tgamma): tgamma(3) on mingw returns a NaN for a
big number, not infinity.
* math.c (ruby_tgamma): fix tgamma(-0.0) on mingw.
[ruby-core:74817] [Bug #12249]
* math.c (ruby_lgamma_r): fix lgamma(-0.0) on mingw and OSX.
* math.c (ruby_lgamma_r): mswin's lgamma_r also seems to be wrong.
cf. [Bug #12249]
* math.c (ruby_lgamma_r): missing/lgamma_r.c is used on Windows,
since msvcrt does not provide it.
* missing/lgamma_r.c (lgamma_r): fix lgamma(-0.0).
[ruby-core:74823] [Bug #12249]
* configure.in (rb_cv_lgamma_r_m0): check if lgamma_r(-0.0)
returns negative infinity. [Bug #12249]
* math.c (ruby_lgamma_r): define by the configured result.
* configure.in (rb_cv_lgamma_r_m0): fix the condition for
lgamma_r(-0.0). [Bug #12249]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@54687 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
-rw-r--r-- | configure.in | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 87e9a06c7d..e992eb31e0 100644 --- a/configure.in +++ b/configure.in @@ -2233,6 +2233,41 @@ main(int argc, char **argv) ]) AS_IF([test "x$rb_cv_atan2_inf_c99" = xyes], [AC_DEFINE(ATAN2_INF_C99)]) +AS_IF([test "x$ac_cv_func_lgamma_r" = xyes], [ + AC_CACHE_CHECK(whether lgamma_r handles -0.0, rb_cv_lgamma_r_m0, [ + AC_TRY_RUN([ +@%:@include <math.h> +@%:@ifdef HAVE_UNISTD_H +@%:@include <unistd.h> +@%:@endif +@%:@ifndef EXIT_SUCCESS +@%:@define EXIT_SUCCESS 0 +@%:@endif +@%:@ifndef EXIT_FAILURE +@%:@define EXIT_FAILURE 1 +@%:@endif + +int +main(int argc, char **argv) +{ + int sign; + double x = lgamma_r(-0.0, &sign); + + /* should be [+inf, -1] */ + if (x <= 0) return EXIT_FAILURE; + if (!isinf(x)) return EXIT_FAILURE; + if (sign != -1) return EXIT_FAILURE; + return EXIT_SUCCESS; +} +], + [rb_cv_lgamma_r_m0=yes], + [rb_cv_lgamma_r_m0=no], + [rb_cv_lgamma_r_m0=yes] + ) + ]) + AS_IF([test "x$rb_cv_lgamma_r_m0" = xno], [AC_DEFINE(LGAMMA_R_M0_FIX)]) +]) + # Some platform need -lrt for clock_gettime, but the other don't. if test x"$ac_cv_func_clock_gettime" != xyes; then # glibc 2.17 moves clock_* functions from librt to the main C library. |