Improve performance Float#positive? and Float#negative? [Feature #17614] (#4160)

1 files changed, 22 insertions, 0 deletions

diff --git a/numeric.rb b/numeric.rb
index fbddaa9f6d..0746a83820 100644
--- a/numeric.rb
+++ b/numeric.rb
@@ -204,4 +204,26 @@ class Float
     Primitive.attr! 'inline'
     Primitive.cexpr! 'FLOAT_ZERO_P(self) ? Qtrue : Qfalse'
   end
+
+  #
+  #  call-seq:
+  #     float.positive?  ->  true or false
+  #
+  #  Returns +true+ if +float+ is greater than 0.
+  #
+  def positive?
+    Primitive.attr! 'inline'
+    Primitive.cexpr! 'RFLOAT_VALUE(self) > 0.0 ? Qtrue : Qfalse'
+  end
+
+  #
+  #  call-seq:
+  #     float.negative?  ->  true or false
+  #
+  #  Returns +true+ if +float+ is less than 0.
+  #
+  def negative?
+    Primitive.attr! 'inline'
+    Primitive.cexpr! 'RFLOAT_VALUE(self) < 0.0 ? Qtrue : Qfalse'
+  end
 end