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configure.in: fix lgamma_r condition

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* 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/trunk@54503 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2016-04-06 13:41:33 +00:00
parent 3f1fc5e42b
commit 6a79276edd
2 changed files with 9 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Wed Apr 6 22:41:31 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* configure.in (rb_cv_lgamma_r_m0): fix the condition for
lgamma_r(-0.0). [Bug #12249]
Wed Apr 6 17:38:42 2016 NAKAMURA Usaku <usa@ruby-lang.org>
* tool/downloader.rb (RubyGems.download): follow the change of the

5
configure.in
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@ -2516,8 +2516,11 @@ int
main(int argc, char **argv)
{
int sign;
double x = lgamma_r(-0.0, &sign);
if (lgamma_r(-0.0, &sign) >= 0) return EXIT_FAILURE;
/* 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;
}