From owner-cvs-all  Sun Feb 25 10:59: 9 2001
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Date: Sun, 25 Feb 2001 12:59:01 -0600
From: "Jacques A. Vidrine" <n@nectar.com>
To: "Andrey A. Chernov" <ache@nagual.pp.ru>
Cc: Mark Murray <mark@grondar.za>, cvs-committers@FreeBSD.org,
	cvs-all@FreeBSD.org
Subject: Re: rand.c patch for review (was: Re: cvs commit: ports/astro/xglobe/files patch-random)
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	"Andrey A. Chernov" <ache@nagual.pp.ru>,
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References: <20010225193409.A56351@nagual.pp.ru> <200102251758.f1PHwuR02481@gratis.grondar.za> <20010225213744.A57744@nagual.pp.ru>
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In-Reply-To: <20010225213744.A57744@nagual.pp.ru>; from ache@nagual.pp.ru on Sun, Feb 25, 2001 at 09:37:44PM +0300
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On Sun, Feb 25, 2001 at 09:37:44PM +0300, Andrey A. Chernov wrote:
> On Sun, Feb 25, 2001 at 19:59:41 +0200, Mark Murray wrote:
> > > Patch for review:
> > 
> > Whats wrong with
> > 
> > int
> > rand(void)
> > {
> > 	return((int)random());
> > }
> > 
> > ??
> 
> 1) Seed & State. Even if srand() is backed by srandom(), if called
> independently, they overwrite each other seeding
> state. initstate() etc. adds more here.

Emphasis:  Standard C says that rand/srand must behave as if
no other library functions ever call them.  i.e. the state must
not change except when the application calls rand/srand.

Cheers,
-- 
Jacques Vidrine / n@nectar.com / jvidrine@verio.net / nectar@FreeBSD.org

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