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Contents

PURPOSE ^

SPARSEINV The sparseinv function computes the sparse inverse subset of a

SYNOPSIS ^

This is a script file.

DESCRIPTION ^

 SPARSEINV  The sparseinv function computes the sparse inverse subset of a
 sparse matrix A.  These entries in the inverse subset correspond to nonzero
 entries in the factorization of A.  They can be computed without computing
 all of the entries in inv(A), so this method is much faster and takes much
 less memory than inv(A).  If A is symmetric and positive definite, then all
 entries of the diagona of inv(A) are computed (as well as many off-diagonal
 terms.  This version is restricted to real sparse matrices.  A complex
 version is left for future work.

 Copyright (c) 2011, Timothy A. Davis

 Files
   sparseinv         - computes the sparse inverse subset of a real sparse square matrix A.
   sparseinv_install - compiles and installs the sparseinv function.
   sparseinv_test    - tests the sparseinv function.

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:
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