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authorakr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-02-07 01:43:43 +0000
committerakr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-02-07 01:43:43 +0000
commit14373fc4db7440d39db4fd39297f2ed44cc990f2 (patch)
tree966d984fadcafb2d9046a161b1e170d99904a592 /include/ruby/missing.h
parentb88ecbcffc30fdf8b5743003563e10a347c05b03 (diff)
* math.c (math_gamma): new method Math.gamma.
(math_lgamma): new method Math.lgamma. * include/ruby/missing.h (tgamma): declared unless HAVE_TGAMMA. (lgamma_r): declared unless HAVE_LGAMMA_R. * configure.in (tgamma): check for replacement funtions. (lgamma_r): ditto. * missing/tgamma.c: new file. based on gamma.c from "C-gengo niyoru saishin algorithm jiten" (New Algorithm handbook in C language) (Gijyutsu hyouron sha, Tokyo, 1991) by Haruhiko Okumura. * missing/lgamma_r.c: ditto. * LEGAL (missing/tgamma.c): describe as public domain. (missing/lgamma_r.c): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15388 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'include/ruby/missing.h')
-rw-r--r--include/ruby/missing.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/ruby/missing.h b/include/ruby/missing.h
index da38a3ef5df..cfa430d5d59 100644
--- a/include/ruby/missing.h
+++ b/include/ruby/missing.h
@@ -79,6 +79,14 @@ extern double erf(double);
extern double erfc(double);
#endif
+#ifndef HAVE_TGAMMA
+extern double tgamma(double);
+#endif
+
+#ifndef HAVE_LGAMMA_R
+extern double lgamma_r(double, int *);
+#endif
+
#ifndef isinf
# ifndef HAVE_ISINF
# if defined(HAVE_FINITE) && defined(HAVE_ISNAN)