From: Kurt  Stephens <redmine@...>
Date: 2008-12-23T13:48:34+09:00
Subject: [ruby-core:20818] [Bug #922] Float == is false when should be true

Issue #922 has been updated by Kurt  Stephens.


Perhaps Ruby should do what Common Lisp implementations have been doing:

http://portal.acm.org/citation.cfm?id=989431
http://kurtstephens.com/files/p372-steele.pdf
ftp://netlib.bell-labs.com/netlib/fp/gdtoa.tgz

Perhaps the default Float#to_s formatting should not throw away necessary precision, so that:

  some_float == eval("#{some_float}")

is always true.


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http://redmine.ruby-lang.org/issues/show/922

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