From 24b1524f20eccd3bfd59171f1f7151fcc272a427 Mon Sep 17 00:00:00 2001
From: Christoph Helma <helma@in-silico.ch>
Date: Mon, 14 Mar 2016 10:06:22 +0100
Subject: folds split on unique compounds instead of data entries

---
 lib/overwrite.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'lib/overwrite.rb')

diff --git a/lib/overwrite.rb b/lib/overwrite.rb
index c92ad2b..2287a92 100644
--- a/lib/overwrite.rb
+++ b/lib/overwrite.rb
@@ -22,6 +22,14 @@ class Numeric
   end
 end
 
+class Float
+  # round to significant digits
+  # http://stackoverflow.com/questions/8382619/how-to-round-a-float-to-a-specified-number-of-significant-digits-in-ruby
+  def signif(signs)
+    Float("%.#{signs}g" % self)
+  end
+end
+
 module Enumerable
   # @return [Array] only the duplicates of an enumerable
   def duplicates
-- 
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