naruse	2010-08-29 09:42:05 +0900 (Sun, 29 Aug 2010)

  New Revision: 29131

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=29131

  Log:
    Add links about floating point. [ruby-core:31849]

  Modified files:
    trunk/numeric.c

Index: numeric.c
===================================================================
--- numeric.c	(revision 29130)
+++ numeric.c	(revision 29131)
@@ -533,6 +533,13 @@
  *  <code>Float</code> objects represent inexact real numbers using
  *  the native architecture's double-precision floating point
  *  representation.
+ *
+ *  Floating point has a different arithmetic and is a inexact number.
+ *  So you should know its esoteric system. see following:
+ *  
+ *  - http://docs.sun.com/source/806-3568/ncg_goldberg.html
+ *  - http://wiki.github.com/rdp/ruby_tutorials_core/ruby-talk-faq#floats_imprecise
+ *  - http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems
  */
 
 VALUE

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