From: Robert Klemme <shortcutter@...>
Date: 2010-04-29T22:15:59+09:00
Subject: Re: flt gem for arbitrary precision

2010/4/29 Giampiero Zanchi <cidza@tin.it>:
> Robert Klemme wrote:
>
>> What's the difference (precision? performance?) vs. doing
>>
>> irb(main):001:0> require 'bigdecimal'
>> => true
>> irb(main):002:0> BigDecimal("2").sqrt(200).to_s
>> =>
>> "0.1414213562373095048801688724209698078569671875376948073176679737990732478462107038850387534327641572735013846230912297024924836055850737212644121497099935831413222665927505592755799950501152782060571470109559971605970125E1"
>> irb(main):003:0> BigDecimal("2").sqrt(200)
>> => #<BigDecimal:93215a4,'0.1414213562 3730950488 0168872420 9698078569
>> 6718753769 4807317667 9737990732 4784621070 3885038753 4327641572
>> 7350138462 3091229702 4924836055 8507372126 4412149709 9935831413
>> 2226659275 0559275579 9950501152 7820605714 7010955997
>> 1605970125E1',224(224)>
>> irb(main):004:0>
>>
>> ?
>
> maybe no difference ?
> I didn't know of BigDecimal neither
> sorry for my ignorance

No problem.  Maybe the gem you've found is a nice wrapper around
BigDecimal with better #inspect and #to_s.  In any case I thought it
good to know that the standard lib contains something similar. :-)

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
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