1 #include "cs_mex.h"
2 /* cs_amd: approximate minimum degree ordering */
mexFunction(int nargout,mxArray * pargout[],int nargin,const mxArray * pargin[])3 void mexFunction
4 (
5 int nargout,
6 mxArray *pargout [ ],
7 int nargin,
8 const mxArray *pargin [ ]
9 )
10 {
11 cs_dl Amatrix, *A ;
12 CS_INT *P, order ;
13 if (nargout > 1 || nargin < 1 || nargin > 2)
14 {
15 mexErrMsgTxt ("Usage: p = cs_amd(A,order)") ;
16 }
17 A = cs_dl_mex_get_sparse (&Amatrix, 0, 0, pargin [0]) ; /* get A */
18 order = (nargin > 1) ? mxGetScalar (pargin [1]) : 1 ; /* get ordering */
19 order = CS_MAX (order, 1) ;
20 order = CS_MIN (order, 3) ;
21 P = cs_dl_amd (order, A) ; /* min. degree ordering */
22 pargout [0] = cs_dl_mex_put_int (P, A->n, 1, 1) ; /* return P */
23 }
24