Issue with precision of Ruby math operations

Question

Do you know how to fix the following issue with math precision?

p RUBY_VERSION # => \"1.9.1\"
p 0.1%1 # => 0.1
p 1.1%1 # => 0.1
p 90.0%1 # => 0.0
p 9         


        

Answer 1

Writing 0.1 into a floating point will always result in rounding errors. If you want 'precise' decimal representation, you should use the Decimal type.