test_float.rb: assertions for negative floats
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54623 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_float.rb: assertions for negative floats
negative floats. [Feature #12245]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54623 b2dd03c8-39d4-4d8f-98ff-823fe69b080e