merge revision(s) r46780: [Backport #9499]
* lib/matrix.rb: Fix sign for cross_product [#9499]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46789 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added by nagachika (Tomoyuki Chikanaga) almost 10 years ago
merge revision(s) r46780: [Backport #9499]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46789 b2dd03c8-39d4-4d8f-98ff-823fe69b080e