Performance improvements - Matrix new package blog

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Package: Matrix new

A summary of the changes made since 11/Nov/2009




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Changes :
- Internal convention : zeros are no longer stored in memory. All functions were changed to reflect this. This is transparent to users.
- Performance improvements for large sparse matrices (based on above), mostly for multiplication and inversion.
- Four new functions : utrig, ltrig, diag and smooth : upper triangular matrix, lower triangular matrix, diagonal matrix and smooth small number to zero (see documentation).
- Correction of numerous bugs.



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