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From: Michael Meissner <meissner AT cygnus DOT com>
Message-ID: <20000705181726.19198@cse.cygnus.com>
Date: Wed, 5 Jul 2000 18:17:26 -0400
To: "J. J. Farrell" <jjf AT bcs DOT org DOT uk>
Cc: Cygwin Mailing List <cygwin AT sourceware DOT cygnus DOT com>
Subject: Re: Random no. problem
References: <20000705154730 DOT 21248 AT cse DOT cygnus DOT com> <200007052211 DOT PAA17557 AT aleph DOT ssd DOT hal DOT com>
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In-Reply-To: <200007052211.PAA17557@aleph.ssd.hal.com>; from J. J. Farrell on Wed, Jul 05, 2000 at 03:11:39PM -0700

On Wed, Jul 05, 2000 at 03:11:39PM -0700, J. J. Farrell wrote:
> > From: Michael Meissner <meissner AT cygnus DOT com>
> > 
> > On Wed, Jul 05, 2000 at 02:32:24PM -0400, DJ Delorie wrote:
> > > 
> > > > Is there a way i can get the same random numbers on Windows NT 4 and
> > > > Sun/SGI ?
> > > 
> > > You can write your own random number generator, and use it instead of
> > > the system's generator.  Otherwise, there is *no* standard for random
> > > number generators.
> > 
> > Actually the ISO C standard mandates the algorithm for the weaker 'rand' and
> > 'srand' functions.
> 
> Is that new in C99 (or whenever the second version was ratified)?
> C89 includes an example implementation, but doesn't mandate any
> particular algorithm anywhere that I can see.

Ok, I'm obviously misremembering things.  Obviously the thing to do is write
your own random number generator, or adapt one of the ones in the libraries,
changing names, assuming you can live with the copyright.

-- 
Michael Meissner, Red Hat, Inc.
PMB 198, 174 Littleton Road #3, Westford, Massachusetts 01886, USA
Work:	  meissner AT redhat DOT com		phone: +1 978-486-9304
Non-work: meissner AT spectacle-pond DOT org	fax:   +1 978-692-4482

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