* rational.c (f_round_common): Rational is expected to be returned by
Rational#*, but mathn.rb breaks that assumption. [ruby-core:56177]
[Bug #8687]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42178 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
in rational.c to refer canonicalization state for mathn support.
[ruby-core:41575] [Bug #5736]
* numeric.c (num_quo): ditto.
* test/test_mathn.rb: add a test for the change at r41109.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41132 b2dd03c8-39d4-4d8f-98ff-823fe69b080e