Re: Efficient Matrix?

[gautier_niouzes@hotmail.com (Gautier)]

Jonas Gasser:

> A : POINTER_MATRIX := new MATRIX(1..10000,1..5000);
> 
> I initialize a variable A from the type POINTER_MATRIX.
> Now I 'm interested to know if this is a common way of creating matrixes and
> if there is a faster and efficient way to handle this or if you have some
> ideas to optimize this.

Briefly, there is not _one_ answer to this (read also the other replies...),
but depending on your data density, computer RAM and CPU cache, the "best"
can be
- your MATRIX
- your MATRIX with pragma pack (smaller but machine code access to data
  possibly more complicated)
- a band matrix
- a sparse matrix
- ... ?

Code for both are in mathpaqs.zip below - just change
the Digits <> into Boolean.
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