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2016-04-18merge revision(s) 54492,54494,54495,54496,54499,54503: [Backport #12249]nagachika
* 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_3@54643 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2011-05-18* missing/lgamma_r.c (lgamma_r): get rid of false warning on mingw.nobu
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31625 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2010-07-28* missing/*.c: include missing.hnobu
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28771 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-06-15tgamma and lgamma_r is not a error function.akr
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-03-06* missing/lgamma_r.c (loggamma): return 0 for 1 and 2.akr
* test/ruby/test_math.rb: accept errors by functions under missing/. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15708 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-02-09* missing/xlgamma_r.c (lgamma_r): return HUGE_VAL for non-positiveakr
integers. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15411 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-02-08* missing/lgamma_r.c (lgamma_r): use smaller argument for sin function.akr
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-02-07 * missing/lgamma_r.c (lgamma_r): some compilers don't permit dividingusa
by literal 0.0. use const variable instead. * {bcc32,win32,wince}/Makefile.sub (MISSING): add lgamma_r.obj and tgamma.obj. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15390 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-02-07* math.c (math_gamma): new method Math.gamma.akr
(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
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