function x = cs_cholsol (A,b,order) %#ok %CS_CHOLSOL solve A*x=b using a sparse Cholesky factorization. % x = cs_cholsol(A,b) computes x = A\b, where A sparse symmetric positive % definite, and b is a full vector. A 3rd input parameter allows the % ordering to be modified: 0: natural, 1:amd(A), 2: amd(S'*S) where S=A except % with no dense rows, 3:amd(A'*A). The default ordering option is 1. % % Example: % Prob = ssget ('HB/bcsstk01') ; A = Prob.A ; b = rand (size (A,1),1) ; % x = cs_cholsol (A,b) ; norm (A*x-b) % % See also CS_CHOL, CS_AMD, CS_LUSOL, CS_QRSOL, MLDIVIDE. % CXSparse, Copyright (c) 2006-2022, Timothy A. Davis. All Rights Reserved. % SPDX-License-Identifier: LGPL-2.1+ error ('cs_cholsol mexFunction not found') ;