Re: Signature

* Ivan Popovski is quoted & my replies are inline below :
> On Fri, Feb 22, 2008 at 01:55:48PM +0100, Ivan Popovski wrote:
> > Huh ok found anomaly here. RANDOM is acting silly here cause it gives
> > same number (same signature) in whole slrn session (you must exit slrn
> > if you want to get other signature lol). You should think of other
> > way to get random number i guess :) or somehow force RANDOM to change
> > values every time you try to post :) 
> 
> Doh its not RANDOM problem its logical problem, i rewrite "signature"
> variable, and after that it doesnt have '|' lol. I ll play with that this
> weekend :)

Rather than using the bash special function $RANDOM, JED showed me this little
trick for generating random numbers for one of my macros recently.  Current
s-lang version does not have a random number generator function, but I
understand it will be included in an upcoming release.

#v+
% Pseudo-random function provided by John E Davis on the slang-users mailing
% list, because from what I can tell at the time of writing this there is no
% way of generating random numbers in s-lang without the gsl module which most
% people won't have.  Possible in slang 2.1.4.

private variable Random;
define srandom (r)
{
   Random = r;
}
srandom (_time() * getpid());
define random ()
{
  Random = (Random*69069U + 1013904243U)&0xFFFFFFFFU;
  return Random;
}
% end pseudo-random function
#v-

Then in your function, use it like this

#v+
define your_function()
{

...
   % returns random number between 0 and 999
   variable rnd=  random() mod 1000;
...

}
#v-

-- 
Troy Piggins | http://piggo.com/~troy/slrn                    ___  |   __   __
                                                             |___  | |/   |/  |
* Updated macro: 14/2/08 - create_msg_id.sl                   ___| | |    |   |
                           now includes random char generation           

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