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Date:      Sun, 25 Feb 2001 13:10:02 -0800
From:      Kris Kennaway <kris@obsecurity.org>
To:        "Andrey A. Chernov" <ache@nagual.pp.ru>
Cc:        "Jacques A. Vidrine" <n@nectar.com>, Matt Dillon <dillon@earth.backplane.com>, Bruce Evans <bde@zeta.org.au>, Kris Kennaway <kris@obsecurity.org>, Robert Watson <rwatson@FreeBSD.org>, Nick Sayer <nsayer@FreeBSD.org>, cvs-all@freebsd.org, arch@freebsd.org
Subject:   Re: rand.c patch for review (was: Re: cvs commit: ports/astro/xglobe/files patch-random)
Message-ID:  <20010225131002.A38192@mollari.cthul.hu>
In-Reply-To: <20010225193409.A56351@nagual.pp.ru>; from ache@nagual.pp.ru on Sun, Feb 25, 2001 at 07:34:09PM %2B0300
References:  <Pine.BSF.4.21.0102251920150.6561-100000@besplex.bde.org> <200102250900.f1P90Qc12868@earth.backplane.com> <20010225092416.A46959@hamlet.nectar.com> <20010225185535.A55782@nagual.pp.ru> <20010225191316.A56093@nagual.pp.ru> <20010225193409.A56351@nagual.pp.ru>

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On Sun, Feb 25, 2001 at 07:34:09PM +0300, Andrey A. Chernov wrote:
> On Sun, Feb 25, 2001 at 19:13:17 +0300, Andrey A. Chernov wrote:
> > On Sun, Feb 25, 2001 at 18:55:36 +0300, Andrey A. Chernov wrote:
> > > On Sun, Feb 25, 2001 at 09:24:16 -0600, Jacques A. Vidrine wrote:
> > > > My conclusion is that either:
> > > > =20
> > > >    Our implementation of `rand' loses. =20
> > >=20
> > > We can easily improve much our rand() random distribution staying ins=
ide
> > > the same API by using just different calculation formula, as we alrea=
dy do
> > > with random(). I plan to do it long time ago, but lost interest. I ca=
n dig
> > > out this formula, if someone is interested.
> >=20
> > We already use this formula (in different context), see
> > good_rand() function in stdlib/random.c
>=20
> Patch for review:

Can't you just wrap it around random() and srandom() instead of
duplicating the code?

Kris

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