1. Random Seed
It's probably too late to make any changes in 2.5, but for future reference:
There seems to be a discrepancy between running standard source
and bound files, with regard to the initial random seed. The following code:
for t=1 to 10 do
?rand(5)
end for
produces a different sequence of numbers each time it is run as
source (with EX; I haven't tried EXW); but when bound the sequence
is always the same. I take this to mean that the initial seed for
the random number function is fixed for the bound file. I don't
know which way was intended, but the source method seems preferable--
if you want a predictable random sequence you can just use set_rand().
--
Michael Bolin
2. Re: Random Seed
Michael Bolin wrote:
>
> It's probably too late to make any changes in 2.5, but for future reference:
>
> There seems to be a discrepancy between running standard source
> and bound files, with regard to the initial random seed. The following code:
>
> }}}
<eucode>
> for t=1 to 10 do
> ?rand(5)
> end for
> </eucode>
{{{
>
> produces a different sequence of numbers each time it is run as
> source (with EX; I haven't tried EXW); but when bound the sequence
> is always the same. I take this to mean that the initial seed for
> the random number function is fixed for the bound file. I don't
> know which way was intended, but the source method seems preferable--
> if you want a predictable random sequence you can just use set_rand().
It is getting late, but I think I better investigate and fix this.
Euphoria is supposed to start you off with a new random sequence
each time. Thanks for reporting it.
Regards,
Rob Craig
Rapid Deployment Software
http://www.RapidEuphoria.com
