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math.c: fix tgamma on mingw
* math.c (mingw_tgamma): tgamma(3) on mingw returns a NaN for a
big number, not infinity.
* 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_2@54687 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31625 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28771 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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* 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
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integers.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15411 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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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
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(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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