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List overview
Download
thread

Re:

Nathalie Jarosz
5 Jul 2000 5 Jul '00
12:29 p.m.
...

From: Frank Heckenbach frank@g-n-u.de To: gpc@gnu.de Subject: Re: Date: Tue, 4 Jul 2000 19:33:48 +0200

...

Here is the routine which is involved:

function travel(djk:real;md:mat;A:minitable;Ak:real;ns,j:integer):real; {probability of an individual leaving patch j to reach patch k} const alpha = 4.910; zim = 0.263; lambda = 0.175; var Sj,t : real; begin Sj:=connect(md,A,ns,j); t:=(exp(-alpha*djk)*pow2(Ak,zim))/((lambda/Sj)+Sj); travel:=t; end;

This is exactly the same GPC bug that Clyde Meli has just reported. As I wrote last night, this bug has been fixed meanwhile. According to the `Fixed Bugs' section in the To-Do list http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html:

20000503: Sparc: division by reals (fjf237.pas, matt1.pas) or `Round (real_constant)' (chaput1.pas) make the compiler crash <199911040915.KAA11168@@humulus.daimi.au.dk>

(Sparc is the processor used in Sun's machines.)

Until there is a new GPC release with this bug fixed, you can work around by type-casting the constants to Real:

const alpha = Real (4.910); zim = Real (0.263); lambda = Real (0.175);

Ok, but I need these true values, so?...

Nathalie ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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