lib/rational.rb: resolved conflicts of aliases.
* lib/mathn.rb: avoided some warnings.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19689 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
lib/rational.rb: resolved conflicts of aliases.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19689 b2dd03c8-39d4-4d8f-98ff-823fe69b080e