[ODE] rand vs dRand

[Jon Watte]

I think it's reasonably important that, whatever method is used, is 
documented, and doesn't change. dRandInt() is pretty good for that. 
The reason has to do with deterministic simulation / replay.

Cheers,

			/ h+


-----Original Message-----
From: ode-bounces at q12.org [mailto:ode-bounces at q12.org]On Behalf Of Adam
D. Moss
Sent: Wednesday, April 28, 2004 9:56 AM
To: ode
Subject: Re: [ODE] rand vs dRand


Marc Rochel wrote:
> Is there a reason why there's used rand() instead of dRand() in 
> dInternalStepIslandFast() in stepfast.cpp at line 837?

I'm guessing that the author didn't know about dRand().
StepFast doesn't need a very good PRNG I think, so dRandInt
is probably fine.  I'll have an experiment...

--Adam
-- 
Adam D. Moss   . ,,^^   adam at gimp.org   http://www.foxbox.org/   co:3
_______________________________________________
ODE mailing list
ODE at q12.org
http://q12.org/mailman/listinfo/ode