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| author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-25 09:53:31 +0000 |
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| committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-25 09:53:31 +0000 |
| commit | 3e567a2e27e447b5a09291fde136964fc76807d3 (patch) | |
| tree | 5fedd30b8e8f7e9267ec77381657c9be7adc19d4 /lib/mathn.rb | |
| parent | 809584595d3ba4c85b93536fcae140d696ab4238 (diff) | |
| download | ruby-3e567a2e27e447b5a09291fde136964fc76807d3.tar.gz ruby-3e567a2e27e447b5a09291fde136964fc76807d3.tar.xz ruby-3e567a2e27e447b5a09291fde136964fc76807d3.zip | |
merges r20938 from trunk into ruby_1_9_1.
* lib/mathn.rb: Math.sqrt(NaN) should be NaN. [ruby-dev:37537]
git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@21012 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/mathn.rb')
| -rw-r--r-- | lib/mathn.rb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/mathn.rb b/lib/mathn.rb index 48cb99f8c..0241f578e 100644 --- a/lib/mathn.rb +++ b/lib/mathn.rb @@ -134,6 +134,8 @@ module Math else Complex(x, -y) end + elsif a.respond_to?(:nan?) and a.nan? + a elsif a >= 0 rsqrt(a) else |