1% SuiteSparseQR : a multifrontal, multithreaded, rank-revealing sparse QR 2% factorization method. Works for both real and complex sparse matrices. 3% 4% Files 5% spqr - multithreaded multifrontal rank-revealing sparse QR. 6% spqr_demo - short demo of SuiteSparseQR 7% spqr_install - compile and install SuiteSparseQR 8% spqr_make - compiles the SuiteSparseQR mexFunctions 9% spqr_qmult - computes Q'*X, Q*X, X*Q', or X*Q with Q in Householder form. 10% spqr_solve - solves a linear system or least squares problem via QR factorization. 11% spqr_singletons - finds the singleton permutation of a sparse matrix A. 12% 13% Example: 14% x = spqr_solve (A,b) ; % solves a least-squares problem (like x=A\b) 15 16% Copyright 2008-2012, Timothy A. Davis, http://www.suitesparse.com 17