From: Toon Moene <toon@moene.indiv.nluug.nl>
To: Emil Block <blime@his.com>
Cc: gcc-help@gcc.gnu.org
Subject: Re: Random Number Generator
Date: Fri, 02 Aug 2002 13:00:00 -0000 [thread overview]
Message-ID: <3D4AE077.4FD313A2@moene.indiv.nluug.nl> (raw)
In-Reply-To: <3D4AB78B.B9163FC4@his.com>
Emil Block wrote:
> Does anyone know why a call to RAND with G77 returns a different value
> than a call to RAND with F77 using the same seed? The computer is a SUN
> Sparc with OS 2.7. The same code is compiled in one case with G77 and in
> the other case with F77.
>
> G77 rand (iseed) returns 0.563463211
> F77 rand (iseed) returns 0.843506
>
> where iseed = 1375.
It would help if you could figure out how the Sun Fortran run time library
does this.
G77's actually does:
srand(iseed);
return rand();
--
Toon Moene - mailto:toon@moene.indiv.nluug.nl - phoneto: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
Maintainer, GNU Fortran 77: http://gcc.gnu.org/onlinedocs/g77_news.html
Join GNU Fortran 95: http://g95.sourceforge.net/ (under construction)
next prev parent reply other threads:[~2002-08-02 20:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-02 9:48 Emil Block
2002-08-02 13:00 ` Toon Moene [this message]
2002-08-02 14:37 ` Emil Block
2002-08-06 9:02 ` Toon Moene
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