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/* cs_cholsol: solve A*x=b using a sparse Cholesky factorization */
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const mxArray *pargin [ ]
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if (nargout > 1 || nargin < 2 || nargin > 3)
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mexErrMsgTxt ("Usage: x = cs_cholsol(A,b,order)") ;
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order = (nargin < 3) ? 1 : mxGetScalar (pargin [2]) ;
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order = CS_MAX (order, 0) ;
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order = CS_MIN (order, 3) ;
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if (mxIsComplex (pargin [0]) || mxIsComplex (pargin [1]))
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A = cs_cl_mex_get_sparse (&Amatrix, 1, pargin [0]) ; /* get A */
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x = cs_cl_mex_get_double (A->n, pargin [1]) ; /* x = b */
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if (!cs_cl_cholsol (order, A, x)) /* x = A\x */
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mexErrMsgTxt ("A not positive definite") ;
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pargout [0] = cs_cl_mex_put_double (A->n, x) ; /* return x */
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mexErrMsgTxt ("complex matrices not supported") ;
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A = cs_dl_mex_get_sparse (&Amatrix, 1, 1, pargin [0]) ; /* get A */
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b = cs_dl_mex_get_double (A->n, pargin [1]) ; /* get b */
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x = cs_dl_mex_put_double (A->n, b, &(pargout [0])) ; /* x = b */
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if (!cs_dl_cholsol (order, A, x)) /* x = A\x */
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mexErrMsgTxt ("A not positive definite") ;