Path: ns-mx!hobbes.physics.uiowa.edu!zaphod.mps.ohio-state.edu!rpi!news-server.csri.toronto.edu!helios.physics.utoronto.ca!neufeld
From: neufeld@helios.physics.utoronto.ca (Christopher Neufeld)
Newsgroups: comp.sys.apple2
Subject: Fixes to Accrete II sources
Message-ID: <1992Jan27.060536.3052@helios.physics.utoronto.ca>
Date: 27 Jan 92 06:05:36 GMT
Sender: news@helios.physics.utoronto.ca (News Administrator)
Organization: University of Toronto Physics/Astronomy/CITA
Lines: 41


   I've fixed a couple of problems in the source code to ACCRETEII, and now
it works properly. Here are the changes I made:

   I seem to remember a problem with the randomization function which was
used in the original program, so I included one which I know works. In the
file 'main.c' change the init() function to the following:

void init()
{
  srand((int) time(NULL));
}

   Also, a very bizarre error in 'utils.c'. I don't know how it got changed
to what it reads presently, but as written it generates numbers which fall
outside the expected range, and lead to domain errors later in the program
when negative numbers are called for 'x' with fractional 'y' in the
pow(x,y)  function.

   The change to make is in the last line. It should read as follows:

double random_number (inner, outer)
double inner, outer;
{
     double range; 
     
     range = outer - inner;
     return((((double)rand()) / (double)(RAND_MAX)) * range + inner);
}

   The original text ended with  ' - outer);'.

   I've repackaged the program and posted it to comp.binaries.apple2, for
those people who don't want to compile it themselves.


-- 
 Christopher Neufeld....Just a graduate student  | Note: New path.
 neufeld@helios.physics.utoronto.ca    Ad astra  | aurora will still
 cneufeld@pnet91.cts.com                         | forward my messages to
 "Don't edit reality for the sake of simplicity" | me on helios