spds.c
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#include "dsdpsys.h"
#include "dsdpdsmat_impl.h"
typedef struct {
int n;
double *an;
int *col;
int *nnz;
} spdsmat;
static int SpSymMatSetURValuesP(void*DS, double v[], int nn, int n){
spdsmat*ds=(spdsmat*)DS;
int i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
double *an=ds->an;
for (i=0;i<n;i++,nnz++){
k1=*nnz; k2=*(nnz+1);
for (j=k1;j<k2;j++,an++,col++){
if ((*col)==i){ *an = v[*col]/2;}
else { *an = v[*col]; }
}
v+=i+1;
}
return 0;
}
static int SpSymMatSetURValuesU(void*DS, double v[], int nn, int n){
spdsmat*ds=(spdsmat*)DS;
int i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
double *an=ds->an;
for (i=0;i<n;i++,nnz++){
k1=*nnz; k2=*(nnz+1);
for (j=k1;j<k2;j++,an++,col++){
if ((*col)==i){ *an = v[*col]/2;}
else { *an = v[*col]; }
}
v+=n;
}
return 0;
}
static int SpSymMatView(void *DS){
spdsmat*ds=(spdsmat*)DS;
int i,j,k1,k2,n=ds->n,*nnz=ds->nnz,*col=ds->col;
double *an=ds->an;
for (i=0;i<n;i++){
k1=nnz[i]; k2=nnz[i+1];
printf("Row %d: ",i);
for (j=k1;j<k2;j++){
if (col[j]==i){ printf("%d: %4.4f",col[j],2*an[j]); }
else { printf("%d: %4.4f",col[j],an[j]);}
}
printf("\n");
}
return 0;
}
/*
static int SpSymMatShiftDiagonal(void *DS, double dd){
spdsmat*ds=(spdsmat*)DS;
int i,n=ds->n,*nnz=ds->nnz;
double *an=ds->an;
for (i=0;i<n;i++){
an[nnz[i+1]-1] += dd/2;
}
return 0;
}
*/
static int SpSymMatDestroy(void *DS){
spdsmat*ds=(spdsmat*)DS;
int info;
DSDPFREE(&ds->nnz,&info);if (info) return 1;
DSDPFREE(&ds->col,&info);if (info) return 1;
DSDPFREE(&ds->an,&info);if (info) return 1;
DSDPFREE(&ds,&info);if (info) return 1;
return 0;
}
static int SpSymMatGetSize(void *DS, int*n){
spdsmat*ds=(spdsmat*)DS;
*n=ds->n;
return 0;
}
static int SpSymMatZero(void*DS){
spdsmat*ds=(spdsmat*)DS;
int nn=ds->nnz[ds->n];
double *an=ds->an;
memset((void*)an,0,nn*sizeof(double));
return 0;
}
static int SpSymMatMult(void*DS, double x[], double y[], int n){
spdsmat*ds=(spdsmat*)DS;
int i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
double *an=ds->an;
memset((void*)y,0,n*sizeof(double));
for (i=0;i<n;i++,nnz++){
k1=*nnz; k2=*(nnz+1);
for (j=k1;j<k2;j++,col++,an++){
y[*col] += x[i] * (*an);
y[i] += x[*col] * (*an);
}
}
return 0;
}
static int SpSymMatVecVec(void*DS, double x[], int n, double *vAv){
spdsmat*ds=(spdsmat*)DS;
int i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
double vv,*an=ds->an;
*vAv=0;
for (i=0;i<n;i++,nnz++){
k1=*nnz; k2=*(nnz+1);
vv=0;
for (j=k1;j<k2;j++,col++,an++){
vv+=x[*col]*(*an);
}
*vAv+=vv*x[i]*2;
}
return 0;
}
/*
static int SpSymMatAddRow(void *DS, int row, double dd, double v[], int n){
spdsmat*ds=(spdsmat*)DS;
int j,k1,k2,*nnz=ds->nnz,*col=ds->col;
double *an=ds->an;
k1=nnz[row]; k2=nnz[row+1];
for (j=k1;j<k2;j++){
if (row==col[j]){ an[j] += dd*v[col[j]]/2; }
else { an[j] += dd*v[col[j]]; }
}
return 0;
}
*/
static const char* dsmatname="SPARSE, SYMMETRIC MATRIX";
static int DSDPDSSparseInitializeOpsP(struct DSDPDSMat_Ops* dsops){
int info;
if (!dsops) return 0;
info=DSDPDSMatOpsInitialize(dsops); DSDPCHKERR(info);
dsops->matseturmat=SpSymMatSetURValuesP;
dsops->matview=SpSymMatView;
dsops->matdestroy=SpSymMatDestroy;
dsops->matgetsize=SpSymMatGetSize;
dsops->matzeroentries=SpSymMatZero;
dsops->matmult=SpSymMatMult;
dsops->matvecvec=SpSymMatVecVec;
dsops->id=6;
dsops->matname=dsmatname;
return 0;
}
static int DSDPDSSparseInitializeOpsU(struct DSDPDSMat_Ops* dsops){
int info;
if (!dsops) return 0;
info=DSDPDSMatOpsInitialize(dsops); DSDPCHKERR(info);
dsops->matseturmat=SpSymMatSetURValuesU;
dsops->matview=SpSymMatView;
dsops->matdestroy=SpSymMatDestroy;
dsops->matgetsize=SpSymMatGetSize;
dsops->matzeroentries=SpSymMatZero;
dsops->matmult=SpSymMatMult;
dsops->matvecvec=SpSymMatVecVec;
dsops->id=6;
dsops->matname=dsmatname;
return 0;
}
static struct DSDPDSMat_Ops tdsdsopsp;
static struct DSDPDSMat_Ops tdsdsopsu;
#undef __FUNCT__
#define __FUNCT__ "DSDPCreateSparseDSMat"
int DSDPSparseMatCreatePattern2P(int n, int rnnz[], int cols[], int tnnz,struct DSDPDSMat_Ops* *dsmatops, void**dsmat){
int i,info;
spdsmat*ds;
DSDPFunctionBegin;
DSDPCALLOC1(&ds,spdsmat,&info);DSDPCHKERR(info);
DSDPCALLOC2(&ds->nnz,int,(n+1),&info);DSDPCHKERR(info);
ds->nnz[0]=0;
for (i=0;i<n;i++) ds->nnz[i+1]=ds->nnz[i]+rnnz[i];
DSDPCALLOC2(&ds->col,int,tnnz,&info);DSDPCHKERR(info);
DSDPCALLOC2(&ds->an,double,tnnz,&info);DSDPCHKERR(info);
for (i=0;i<tnnz;i++) ds->col[i]=cols[i];
info=DSDPDSSparseInitializeOpsP(&tdsdsopsp); DSDPCHKERR(info);
*dsmatops=&tdsdsopsp;
*dsmat=(void*)ds;
DSDPFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "DSDPCreateSparseDSMatU"
int DSDPSparseMatCreatePattern2U(int n, int rnnz[], int cols[], int tnnz,struct DSDPDSMat_Ops* *dsmatops, void**dsmat){
int i,info;
spdsmat*ds;
DSDPFunctionBegin;
DSDPCALLOC1(&ds,spdsmat,&info);DSDPCHKERR(info);
DSDPCALLOC2(&ds->nnz,int,(n+1),&info);DSDPCHKERR(info);
ds->nnz[0]=0;
for (i=0;i<n;i++) ds->nnz[i+1]=ds->nnz[i]+rnnz[i];
DSDPCALLOC2(&ds->col,int,tnnz,&info);DSDPCHKERR(info);
DSDPCALLOC2(&ds->an,double,tnnz,&info);DSDPCHKERR(info);
for (i=0;i<tnnz;i++) ds->col[i]=cols[i];
info=DSDPDSSparseInitializeOpsU(&tdsdsopsu); DSDPCHKERR(info);
*dsmatops=&tdsdsopsu;
*dsmat=(void*)ds;
DSDPFunctionReturn(0);
}
DSDPDSMatOpsInitialize
int DSDPDSMatOpsInitialize(struct DSDPDSMat_Ops *aops)
Set pointers to null.
Definition dsdpdsmat.c:214
dsdpdsmat_impl.h
Structure of function pointers that each SDP Delta S matrix type (sparse, dense, diagonal,...
dsdpsys.h
Error handling, printing, and profiling.
DSDPDSMat_Ops
Symmetric Delta S matrix for one block in the semidefinite cone.
Definition dsdpdsmat_impl.h:15