configure.in: check lgamma_r(-0.0)

* 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.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/math.c b/math.c
index 8c16c76c3b..9ac898f0ba 100644
--- a/math.c
+++ b/math.c
@@ -750,7 +750,7 @@ ruby_tgamma(const double d)
 #define tgamma(d) ruby_tgamma(d)
 #endif
 
-#if defined __APPLE__
+#if defined LGAMMA_R_M0_FIX
 static inline double
 ruby_lgamma_r(const double d, int *sign)
 {