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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-04-06 01:17:55 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-04-06 01:17:55 +0000
commit39330d6b79c95f67006453156d8405242da04d7b (patch)
tree12ca9bb4ca84999c676c44799b495825bf9f35c9
parentbb7a4c2a00f6da4ff63f24b2db2a0aa0c44eb63f (diff)
lgamma_r.c: fix at -0.0
* 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] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54496 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r--ChangeLog8
-rw-r--r--math.c2
-rw-r--r--missing/lgamma_r.c2
3 files changed, 10 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index e9563dd..4a735a6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Wed Apr 6 10:17:53 2016 cremno phobia <cremno@mail.ru>
+
+ * 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]
+
Wed Apr 6 01:22:55 2016 NAKAMURA Usaku <usa@ruby-lang.org>
* math.c (ruby_lgamma_r): mswin's lgamma_r also seems to be wrong.
diff --git a/math.c b/math.c
index 23c6210..8c16c76 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 _WIN32 || defined __APPLE__
+#if defined __APPLE__
static inline double
ruby_lgamma_r(const double d, int *sign)
{
diff --git a/missing/lgamma_r.c b/missing/lgamma_r.c
index 6d2f38f..01066d2 100644
--- a/missing/lgamma_r.c
+++ b/missing/lgamma_r.c
@@ -66,7 +66,7 @@ lgamma_r(double x, int *signp)
double i, f, s;
f = modf(-x, &i);
if (f == 0.0) { /* pole error */
- *signp = 1;
+ *signp = signbit(x) ? -1 : 1;
errno = ERANGE;
return HUGE_VAL;
}