1 2 static char help[] = "Test saving SeqSBAIJ matrix that is missing diagonal entries."; 3 4 #include <petscmat.h> 5 6 int main(int argc,char **args) 7 { 8 Mat A; 9 PetscInt bs=3,m=4,i,j,val = 10,row[2],col[3],rstart; 10 PetscMPIInt size; 11 PetscScalar x[6][9]; 12 13 PetscFunctionBeginUser; 14 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 15 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 16 PetscCheck(size == 1,PETSC_COMM_WORLD,PETSC_ERR_WRONG_MPI_SIZE,"Test is only for sequential"); 17 PetscCall(MatCreateSeqSBAIJ(PETSC_COMM_SELF,bs,m*bs,m*bs,1,NULL,&A)); 18 PetscCall(MatSetOption(A,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE)); 19 rstart = 0; 20 21 row[0] =rstart+0; row[1] =rstart+2; 22 col[0] =rstart+0; col[1] =rstart+1; col[2] =rstart+3; 23 for (i=0; i<6; i++) { 24 for (j =0; j< 9; j++) x[i][j] = (PetscScalar)val++; 25 } 26 PetscCall(MatSetValuesBlocked(A,2,row,3,col,&x[0][0],INSERT_VALUES)); 27 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 28 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 29 PetscCall(MatView(A,PETSC_VIEWER_BINARY_WORLD)); 30 31 PetscCall(MatDestroy(&A)); 32 PetscCall(PetscFinalize()); 33 return 0; 34 } 35