[fpc-pascal] sparse matrix storage method

Mehmet Erol Sanliturk sanliturk at ttmail.com
Tue Jun 9 10:25:16 CEST 2009

Alain Michaud wrote:
> Hi,
>    would someone know of a procedure for solving a system of linear 
> equations using a SPARSE MATRIX storage model.
> if one uses the usual: array [1..10000;1..10000] of "mostly_zeroes" then 
> this is a really big waist of memory.
> I am thinking of using: Tlist instead, but I would not like to reinvent 
> the wheel!  I would apreciate if someone could give me a tip.
> Thank you
> Alain

In the web site
you may find both C and Fortran programs about sparse matrices ,
( I do not know whether there exist Pascal programs for sparse matrices 
, you may search . )
I think , the above site is the best source of sparse matrix computation
sources .

In  < Data Structures with Pascal > books , there may exist
sparse matrix computation procedures .

You may see the following sites .
I could not find any procedure for sparse matrices here ,
but existing algorithms may be useful :


The following sites are about numerical computation languages .
They are open source projects . In their sources it may be possible to
find sparse matrix computation related sources ( They are not programmed 
in Pascal ) :


The following site is about mathematics subjects :


Thank you very much .

Mehmet Erol Sanliturk

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