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mattsoutherden/gist:1200438

Created September 7, 2011 12:29
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Strange Ruby Behaviour
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gistfile1.txt
>> d.wordpress_deal.merchant_value
=> 37.05
>> d.wordpress_deal.merchant_value * 100
=> 3705.0
>> (d.wordpress_deal.merchant_value * 100).to_i
=> 3704
>>
@levent
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levent commented Sep 7, 2011

don't ask

require 'bigdecimal'
(BigDecimal('37.05') * BigDecimal('100.0')).to_f
=> 3705.0

see http://en.wikipedia.org/wiki/Floating_point#Representable_numbers.2C_conversion_and_rounding

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