ivan@140: /**************************************************************************
ivan@140:  *
ivan@140:  * File name: omp2mex.c
ivan@140:  *
ivan@140:  * Ron Rubinstein
ivan@140:  * Computer Science Department
ivan@140:  * Technion, Haifa 32000 Israel
ivan@140:  * ronrubin@cs
ivan@140:  *
ivan@140:  * Last Updated: 18.8.2009
ivan@140:  *
ivan@140:  *************************************************************************/
ivan@140: 
ivan@140: #include "ompcore.h"
ivan@140: #include "omputils.h"
ivan@140: #include "mexutils.h"
ivan@140: 
ivan@140: 
ivan@140: /* Input Arguments */
ivan@140: 
ivan@140: #define	IN_D	        prhs[0]
ivan@140: #define IN_X          prhs[1]
ivan@140: #define IN_DtX        prhs[2]
ivan@140: #define IN_XtX        prhs[3]
ivan@140: #define IN_G          prhs[4]
ivan@140: #define IN_EPS        prhs[5]
ivan@140: #define IN_SPARSE_G   prhs[6]
ivan@140: #define IN_MSGDELTA   prhs[7]
ivan@140: #define IN_MAXATOMS   prhs[8]
ivan@140: #define IN_PROFILE    prhs[9]
ivan@140: 
ivan@140: 
ivan@140: /* Output Arguments */
ivan@140: 
ivan@140: #define	GAMMA_OUT     plhs[0]
ivan@140: 
ivan@140: 
ivan@140: /***************************************************************************************/
ivan@140: 
ivan@140: 
ivan@140: void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray*prhs[])
ivan@140: 
ivan@140: {
ivan@140:   double *D, *x, *DtX, *XtX, *G, eps, msgdelta;
ivan@140:   int gmode, maxatoms, profile;
ivan@140:   mwSize m, n, L;    /* D is n x m , X is n x L, DtX is m x L */
ivan@140: 
ivan@140:   
ivan@140:   /* check parameters */
ivan@140:   
ivan@140:   checkmatrix(IN_D, "OMP2", "D");
ivan@140:   checkmatrix(IN_X, "OMP2", "X");
ivan@140:   checkmatrix(IN_DtX, "OMP2", "DtX");
ivan@140:   checkmatrix(IN_XtX, "OMP2", "XtX");
ivan@140:   checkmatrix(IN_G, "OMP2", "G");
ivan@140:   
ivan@140:   checkscalar(IN_EPS, "OMP2", "EPSILON");
ivan@140:   checkscalar(IN_SPARSE_G, "OMP2", "sparse_g");
ivan@140:   checkscalar(IN_MSGDELTA, "OMP2", "msgdelta");
ivan@140:   checkscalar(IN_MAXATOMS, "OMP2", "maxatoms");
ivan@140:   checkscalar(IN_PROFILE, "OMP2", "profile");
ivan@140:   
ivan@140:   
ivan@140:   /* get parameters */
ivan@140:   
ivan@140:   x = D = DtX = XtX = G = 0;
ivan@140:   
ivan@140:   if (!mxIsEmpty(IN_D))
ivan@140:     D = mxGetPr(IN_D);
ivan@140:   
ivan@140:   if (!mxIsEmpty(IN_X))
ivan@140:     x = mxGetPr(IN_X);
ivan@140:   
ivan@140:   if (!mxIsEmpty(IN_DtX))
ivan@140:     DtX = mxGetPr(IN_DtX);
ivan@140:   
ivan@140:   if (!mxIsEmpty(IN_XtX))
ivan@140:     XtX = mxGetPr(IN_XtX);
ivan@140:   
ivan@140:   if (!mxIsEmpty(IN_G))
ivan@140:     G = mxGetPr(IN_G);
ivan@140:   
ivan@140:   eps = mxGetScalar(IN_EPS);
ivan@140:   if ((int)(mxGetScalar(IN_SPARSE_G)+1e-2)) {
ivan@140:     gmode = SPARSE_GAMMA;
ivan@140:   }
ivan@140:   else {
ivan@140:     gmode = FULL_GAMMA;
ivan@140:   }
ivan@140:   msgdelta = mxGetScalar(IN_MSGDELTA);
ivan@140:   if (mxGetScalar(IN_MAXATOMS) < -1e-5) {
ivan@140:     maxatoms = -1;
ivan@140:   }
ivan@140:   else {
ivan@140:     maxatoms = (int)(mxGetScalar(IN_MAXATOMS)+1e-2);
ivan@140:   }
ivan@140:   profile = (int)(mxGetScalar(IN_PROFILE)+1e-2);
ivan@140:   
ivan@140:   
ivan@140:   /* check sizes */
ivan@140:   
ivan@140:   if (D && x) {
ivan@140:     n = mxGetM(IN_D);
ivan@140:     m = mxGetN(IN_D);
ivan@140:     L = mxGetN(IN_X);
ivan@140:     
ivan@140:     if (mxGetM(IN_X) != n) {
ivan@140:       mexErrMsgTxt("D and X have incompatible sizes.");
ivan@140:     }
ivan@140:     
ivan@140:     if (G) {
ivan@140:       if (mxGetN(IN_G)!=mxGetM(IN_G)) {
ivan@140:         mexErrMsgTxt("G must be a square matrix.");
ivan@140:       }
ivan@140:       if (mxGetN(IN_G) != m) {
ivan@140:         mexErrMsgTxt("D and G have incompatible sizes.");
ivan@140:       }
ivan@140:     }
ivan@140:   }
ivan@140:   
ivan@140:   else if (DtX && XtX) {
ivan@140:     m = mxGetM(IN_DtX);
ivan@140:     L = mxGetN(IN_DtX);
ivan@140:     
ivan@140:     /* set n to an arbitrary value that is at least the max possible number of selected atoms */
ivan@140:     
ivan@140:     if (maxatoms>0) {
ivan@140:       n = maxatoms;
ivan@140:     }
ivan@140:     else {
ivan@140:       n = m;
ivan@140:     }
ivan@140:     
ivan@140:     if ( !(mxGetM(IN_XtX)==L && mxGetN(IN_XtX)==1) && !(mxGetM(IN_XtX)==1 && mxGetN(IN_XtX)==L) ) {
ivan@140:       mexErrMsgTxt("DtX and XtX have incompatible sizes.");
ivan@140:     }
ivan@140:     
ivan@140:     if (mxGetN(IN_G)!=mxGetM(IN_G)) {
ivan@140:       mexErrMsgTxt("G must be a square matrix.");
ivan@140:     }
ivan@140:     if (mxGetN(IN_G) != m) {
ivan@140:       mexErrMsgTxt("DtX and G have incompatible sizes.");
ivan@140:     }
ivan@140:   }
ivan@140:   
ivan@140:   else {
ivan@140:     mexErrMsgTxt("Either D and X, or DtX and XtX, must be specified.");
ivan@140:   }
ivan@140:   
ivan@140:   
ivan@140:   /* Do OMP! */
ivan@140:   
ivan@140:   GAMMA_OUT = ompcore(D, x, DtX, XtX, G, n, m, L, maxatoms, eps, gmode, profile, msgdelta, 1);
ivan@140:   
ivan@140:   return;
ivan@140: }