From: Damian Yerrick <MYNAMEISd_yerrick AT hotmail DOT comNO2CANNEDHAM>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Uptime and entropy in DOS
Organization: Pin Eight Software  http://pineight.8m.com/
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NNTP-Posting-Date: Tue, 15 Feb 2000 18:05:22 GMT
Distribution: world
Date: Tue, 15 Feb 2000 18:05:22 GMT
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

On 15 Feb 2000 16:10:29 GMT, buers AT gmx DOT de (Dieter Buerssner) wrote:

>REPLYTOd_yerrick AT hotmail DOT comNO2CANNEDHAM (Damian Yerrick) wrote in 
><b2miasojmafqqmurpcb90b3pmf8fv0bs6v AT 4ax DOT com>:
>
>>On Tue, 15 Feb 2000 09:53:49 +0200 (IST), Eli Zaretskii
>><eliz AT is DOT elta DOT co DOT il> wrote:
>>>But I don't see the above calculation anywhere in the sources of
>>>`random.c', at least as it appears in DJGPP v2.03.
>>
>>I saw it in the FreeBSD sources.  It replaces
>>  x = (x * 1103515245) + 12345;
>>in the seed generator.
>
>[I am not sure, what you mean by seed generator]

initstate()/srandom() to initialize the PRNG

>There may be a misunderstanding here. If I am not mistaken,
>your code is the classic (bad) implementation of rand()
>in BSD unices, while Eli is referring to BSD random().

Old versions of BSD random() (including the DJGPP version) use classic
rand() to initialize random()'s state.  Recent FreeBSD random() uses a
different generator to do this; I might get to work on porting the new
random() to DJGPP.

-- 
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