[Qt-interest] [SOLVED] Re: Best Random Number Generator in Qt

[Aaron Lewis]

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On 04/15/2010 08:14 PM, Sean Harmer wrote:
> 
> This is because the random number generator is only a pseudo random number 
> generator. If you do not seed it (or use the same seed) then you get the same 
> sequence of pseudo random numbers each time.
> 
> To get different sequences each time you run your application use the qsrand() 
> function to seed it with a different value each time. A common approach is to 
> seed it with the number of seconds since some time. For example:
> 
> qsrand( QDateTime::currentDateTime().toTime_t() );

Exactly , random seed is always the same , so i got the same number
every time.

> 
> Depending upon your needs though you may wish to use a completely different 
> pseudo random number generator. The last time I checked the built-in ones are 
> not particularly good for serious statistical work (e.g. Monte Carlo 
> simulations). They are fine for simple use cases though.

Right now , using current time as a random seed is good enough.


Thanks Sean ;-)


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Best Regards,
Aaron Lewis - PGP: 0x4A6D32A0
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