From: LAMBEAU Bernard <blambeau@...>
Date: 2010-04-07T20:02:00+09:00
Subject: Precision and ==

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We all know that finite representation comes with some difficulties...
but...

x = 45.0*(Math::PI / 180.0)
y = 0.785398163397448
puts "#{x.class} : #{x}"
puts "#{y.class} : #{y}"
puts 45.0*(Math::PI / 180.0) == 0.785398163397448

prints

Float : 0.785398163397448
Float : 0.785398163397448
false

Does to_s show something less precise than the internal representation of
Floats?

thx
Bernard

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