From 542d3a071f0cf5fd7488edcb11ab0472990e9bbf Mon Sep 17 00:00:00 2001 From: nobu Date: Tue, 5 Apr 2016 15:53:32 +0000 Subject: math.c: fix lgamma * math.c (ruby_lgamma_r): fix lgamma(-0.0) on mingw and OSX. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- test/ruby/test_math.rb | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'test/ruby') diff --git a/test/ruby/test_math.rb b/test/ruby/test_math.rb index c17b21a53d..1d571252ee 100644 --- a/test/ruby/test_math.rb +++ b/test/ruby/test_math.rb @@ -275,6 +275,11 @@ class TestMath < Test::Unit::TestCase assert_float_and_int([Math.log(6), 1], Math.lgamma(4)) assert_raise(Math::DomainError) { Math.lgamma(-Float::INFINITY) } + x, sign = Math.lgamma(-0.0) + mesg = "Math.lgamma(-0.0) should be [INF, -1]" + assert_infinity(x, mesg) + assert_predicate(x, :positive?, mesg) + assert_equal(-1, sign, mesg) end def test_fixnum_to_f -- cgit v1.2.3