From efd19badf43f4f1f24d5aec8a28e94a6e1e47b5b Mon Sep 17 00:00:00 2001
From: "S.H" <gamelinks007@gmail.com>
Date: Sat, 20 Feb 2021 04:11:19 +0900
Subject: Improve performance some Numeric methods [Feature #17632] (#4190)

---
 numeric.rb | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

(limited to 'numeric.rb')

diff --git a/numeric.rb b/numeric.rb
index 0746a83820..0c191c01c0 100644
--- a/numeric.rb
+++ b/numeric.rb
@@ -1,3 +1,49 @@
+class Numeric
+  #
+  #  call-seq:
+  #     num.real?  ->  true or false
+  #
+  #  Returns +true+ if +num+ is a real number (i.e. not Complex).
+  # 
+  def real?
+    return true
+  end
+
+  #
+  #  call-seq:
+  #     num.integer?  ->  true or false
+  #
+  #  Returns +true+ if +num+ is an Integer.
+  #
+  #      1.0.integer?   #=> false
+  #      1.integer?     #=> true
+  # 
+  def integer?
+    return false
+  end
+
+  #
+  #  call-seq:
+  #     num.finite?  ->  true or false
+  #
+  #  Returns +true+ if +num+ is a finite number, otherwise returns +false+.
+  #
+  def finite?
+    return true
+  end
+
+  #
+  #  call-seq:
+  #     num.infinite?  ->  -1, 1, or nil
+  #
+  #  Returns +nil+, -1, or 1 depending on whether the value is
+  #  finite, <code>-Infinity</code>, or <code>+Infinity</code>.
+  #
+  def infinite?
+    return nil
+  end
+end
+
 class Integer
   # call-seq:
   #    -int  ->  integer
-- 
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