From: Run Paint Run Run <redmine@...>
Date: 2009-08-01T17:15:31+09:00
Subject: [ruby-core:24651] [Bug #1854] Random#float Should Reject Infinity and NaN as Upper Limits

Bug #1854: Random#float Should Reject Infinity and NaN as Upper Limits
http://redmine.ruby-lang.org/issues/show/1854

Author: Run Paint Run Run
Status: Open, Priority: Normal
Category: core
ruby -v: ruby 1.9.2dev (2009-08-01 trunk 24343) [i686-linux]

Random#float happily accepts Infinity and NaN as arguments. It should reject them for three reasons: 

* Accepting an argument of Infinity implies that the value returned will be between 0.0 and Infinity, when in fact Infinity is always returned.
* If Infinity or NaN were given by mistake the method would function without error despite not even being _pseudo_ random. That is very dangerous.
* NaN is meaningless as maximum value.


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