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% SuiteSparseQR : a multifrontal, multithreaded, rank-revealing sparse QR
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% factorization method. Works for both real and complex sparse matrices.
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% spqr - multithreaded multifrontal rank-revealing sparse QR.
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% spqr_demo - short demo of SuiteSparseQR
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% spqr_install - compile and install SuiteSparseQR
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% spqr_make - compiles the SuiteSparseQR mexFunctions
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% spqr_qmult - computes Q'*X, Q*X, X*Q', or X*Q with Q in Householder form.
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% spqr_solve - solves a linear system or least squares problem via QR factorization.
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% spqr_singletons - finds the singleton permutation of a sparse matrix A.
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% x = spqr_solve (A,b) ; % solves a least-squares problem (like x=A\b)
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% Copyright 2008, Timothy A. Davis, University of Florida