archive/ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2025-09-20 02:53:57 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

math.c: fix lgamma

Browse source 
* 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
This commit is contained in:
nobu 2016-04-05 15:53:32 +00:00
parent 8c4c3508d9
commit 542d3a071f
3 changed files with 24 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

5
test/ruby/test_math.rb
View file

@ -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