lib/prime.rb (Prime#prime_division): now decomposes negative integer into a decomposition with element [-1, 1].
test/test_prime.rb: test for it.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@24121 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added by yugui (Yuki Sonoda) over 16 years ago
merges r24091 from trunk into ruby_1_9_1.¶
lib/prime.rb (Prime#prime_division): now decomposes
negative integer into a decomposition with element [-1, 1].
test/test_prime.rb: test for it.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@24121 b2dd03c8-39d4-4d8f-98ff-823fe69b080e