POV-Ray : Newsgroups : povray.general : Problems with iterations : Re: Problems with iterations Server Time
31 Jul 2024 02:18:16 EDT (-0400)
  Re: Problems with iterations  
From: Fredrik Eriksson
Date: 10 Jan 2008 03:02:17
Message: <op.t4pe93otcs6ysw@e6600.bredbandsbolaget.se>
On Thu, 10 Jan 2008 08:22:20 +0100, SharkD <nomail@nomail> wrote:
> "SharkD" <nomail@nomail> wrote:
>> Check out this test scene:
>>
>> #local i = 0;
>> #local numerator = 1;
>> #local divisor = 6;
>> #while(i < numerator)
>>  #local i = i + numerator/divisor;
>>  #debug concat("i = ", str(i, 0, -1),"\n")
>> #end
>>
>> Shouldn't the iterations stop when i = 1? What am I doing wrong?
>
> Just to be clear, the last entry printed to the Messages panel is "i =

> 1.166667".


You should move the variable update (i.e. "#local i = i +...") to the 
end  

of the loop. You should also realize that comparing floating point numbe
rs  

like this is problematic at best, and should generally be avoided.



-- 

FE


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