User`s guide

R2006b
21-16
Permutation Vectors with lu, luinc, ldl
Permutation vectors for lu, luinc, and ldl provide memory savings and, for large data, a
noticeable performance improvement. You can now store permutation information in a
single 1-by-N vector instead of an n-by-n matrix,
Two-Element Threshold for lu, spparms
A new two-element threshold for lu and spparms gives you more control over sparse lu
and sparse \ behavior.
Lower Triangular Factors from symbfact
Extra arguments exported for symbfact allow the return of the lower triangular symbolic
factor.
Support for New Versions of AMD, COLAMD, CHOLMOD, UMFPACK
MATLAB 7.3 supports new versions of the following libraries:
Library Name Version Supported in MATLAB 7.3
AMD 2.0
COLAMD 2.5
CHOLMOD 1.1
UMFPACK 5.0