numeric.c: Numeric#positive? and Numeric#negative?

* numeric.c (num_positive_p, num_negative_p): add methods
  Numeric#positive? and Numeric#negative?.
  [ruby-core:69173] [Feature #11151]
* numeric.c (flo_positive_p, flo_negative_p): specialiazed
  functions for Float.
* complex.c (Init_Complex): Complex do not have positive? and
  negative? methods

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50522 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 24 insertions, 0 deletions

diff --git a/test/ruby/test_numeric.rb b/test/ruby/test_numeric.rb
index 5a7a4e3765..f539ccf731 100644
--- a/test/ruby/test_numeric.rb
+++ b/test/ruby/test_numeric.rb
@@ -146,6 +146,30 @@ class TestNumeric < Test::Unit::TestCase
     assert_predicate(a, :zero?)
   end
 
+  def test_positive_p
+    a = Class.new(Numeric) do
+      def >(x); true; end
+    end.new
+    assert_predicate(a, :positive?)
+
+    a = Class.new(Numeric) do
+      def >(x); false; end
+    end.new
+    assert_not_predicate(a, :positive?)
+  end
+
+  def test_negative_p
+    a = Class.new(Numeric) do
+      def <(x); true; end
+    end.new
+    assert_predicate(a, :negative?)
+
+    a = Class.new(Numeric) do
+      def <(x); false; end
+    end.new
+    assert_not_predicate(a, :negative?)
+  end
+
   def test_to_int
     a = Class.new(Numeric) do
       def to_i; :ok; end