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Figure Properties - SERC

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lu<br />

Algorithm For full matrices X, lu uses the LAPACK routines listed in the following table.<br />

2-1392<br />

Real Complex<br />

X double DGETRF ZGETRF<br />

X single SGETRF CGETRF<br />

For sparse X, with four outputs, lu uses UMFPACK. With three or fewer<br />

outputs, lu uses code introduced in MATLAB 4.<br />

See Also cond, det, inv, luinc, qr, rref<br />

The arithmetic operators \ and /<br />

References [1] Anderson, E., Z. Bai, C. Bischof, S. Blackford, J. Demmel, J. Dongarra,<br />

J. Du Croz, A. Greenbaum, S. Hammarling, A. McKenney, and D. Sorensen,<br />

LAPACK User’s Guide (http://www.netlib.org/lapack/lug/lapack_lug.html),<br />

Third Edition, SIAM, Philadelphia, 1999.<br />

[2] Davis, T. A., UMFPACK Version 4.0 User Guide<br />

(http://www.cise.ufl.edu/research/sparse/umfpack/v4.0/UserGuide.pdf),<br />

Dept. of Computer and Information Science and Engineering, Univ. of Florida,<br />

Gainesville, FL, 2002.

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