Hi,

# ./miniruby -v
ruby 1.9.0 (2007-05-17 patchlevel 0) [i686-linux]

# make run
./miniruby  -I../trunk/lib ../trunk/test.rb
2007-05-18 05:40:09 +0900
280.953529456894

Regards,
Koichi

vikas vaid wrote:
> Hi,
> 
> try this code..
> require "mathn"
> puts getTime=Time.now
> # normal standard deviation test"
>  def variance(population)
>             n = 0
>             mean = 0.0
>             s = 0.0
> 
> 
>             population.each { |x|
>               n = n + 1
>               delta = x.to_f - mean.to_f
>               mean = mean.to_f + (delta.to_f / n).to_f
>               s = s + delta.to_f * (x.to_f - mean.to_f).to_f
>             }
> 
> 
>             # if you want to calculate std deviation
>             # of a sample change this to "s / (n-1)"
> 
>             return (s / (n-1)).to_f
>           end
> 
> chk_Arr=[632,567,936,109,180,23,369,284,40,36,233,280,752,293,84]
> 
> puts  Math.sqrt(variance(chk_Arr))
> 
> 
> Superclass mismatch for class rational...
> 
> error i get is ..
> 
> Superclass mismatch for class rational...
> 
> any idea....
> 
> Thanks
> SASADA Koichi wrote:
>> Hi,
>>
>> On my environment:
>>
>> # ./ruby -v
>> ruby 1.9.0 (2007-05-17 patchlevel 0) [i686-linux]
>> # make runruby
>> ./miniruby  ../trunk/runruby.rb --extout=.ext -- ../trunk/test.rb
>> hello world
>>
>> Any other hint?
> 
> 


-- 
// SASADA Koichi at atdot dot net



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