From 3730710d79aa0bde6ab5b36e18c734dd9718aac0 Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 30 Mar 2008 14:50:55 +0000
Subject: * proc.c (proc_dup): should copy is_lambda attribute as well.  
 [ruby-talk:296244]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15860 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/complex.rb | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'lib/complex.rb')

diff --git a/lib/complex.rb b/lib/complex.rb
index 9d926023a7..505b0120e3 100644
--- a/lib/complex.rb
+++ b/lib/complex.rb
@@ -1,3 +1,35 @@
+class Integer
+
+  def gcd(other)
+    min = self.abs
+    max = other.abs
+    while min > 0
+      tmp = min
+      min = max % min
+      max = tmp
+    end
+    max
+  end
+
+  def lcm(other)
+    if self.zero? or other.zero?
+      0
+    else
+      (self.div(self.gcd(other)) * other).abs
+    end
+  end
+
+  def gcdlcm(other)
+    gcd = self.gcd(other)
+    if self.zero? or other.zero?
+      [gcd, 0]
+    else
+      [gcd, (self.div(gcd) * other).abs]
+    end
+  end
+
+end
+
 module Math
 
   alias exp! exp
-- 
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