From:	Thomas Demmer <demmer AT LSTM DOT Ruhr-UNI-Bochum DOT De>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Bug in gcc 2.7.2?
Date:	Thu, 16 Apr 1998 23:20:00 +0200
Organization:	Lehrstuhl fuer Stroemungsmechanik
Lines:	37
Message-ID:	<35367600.83A29F93@LSTM.Ruhr-UNI-Bochum.De>
References:	<35360BD4 DOT 5DB6C8C5 AT sis DOT co DOT at>
NNTP-Posting-Host:	bvb.lstm.ruhr-uni-bochum.de
Mime-Version:	1.0
CC:	"Gerhard W. Gruber" <g DOT gruber AT sis DOT co DOT at>
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Gerhard W. Gruber wrote:
> 
> I just encountered a strange thing. I was using a loop that process a buffer.
> When the index is outside the buffersize the code should read the next block
> from the file and continue. To do this I'm using the modulo operator but there
> seems a bug with this.

It's late and I might be completely wrong, but what 
the heck you want to do?

I guess something like this:
char elem(unsigned index){
static unsigned long oldblock;
static int been_here = 0;
static char buff[BUFLEN];
long block;
  block = index/BUFLEN;
  if(!been_here || block != oldblock){
    been_here = 1;
    Read_Block( oldblock=block );
  }
  return buff[ index % BUFLEN];
}

Ciao
Tom

*************************************************************
* Thomas Demmer                                             *
* Lehrstuhl fuer Stroemungsmechanik                         *
* Ruhr-Uni-Bochum                                           *
* Universitaetsstr. 150                                     *
* D-44780  Bochum                                           *
* Tel: +49 234 700 6434                                     *
* Fax: +49 234 709 4162                                     *
* http://www.lstm.ruhr-uni-bochum.de/~demmer                *
*************************************************************

- Raw text -