Actual source code: ex133.c
1: static char help[] = "Test saving SeqSBAIJ matrix that is missing diagonal entries.";
3: #include <petscmat.h>
5: int main(int argc, char **args)
6: {
7: Mat A;
8: PetscInt bs = 3, m = 4, i, j, val = 10, row[2], col[3], rstart;
9: PetscMPIInt size;
10: PetscScalar x[6][9];
12: PetscFunctionBeginUser;
13: PetscCall(PetscInitialize(&argc, &args, (char *)0, help));
14: PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
15: PetscCheck(size == 1, PETSC_COMM_WORLD, PETSC_ERR_WRONG_MPI_SIZE, "Test is only for sequential");
16: PetscCall(MatCreateSeqSBAIJ(PETSC_COMM_SELF, bs, m * bs, m * bs, 1, NULL, &A));
17: PetscCall(MatSetOption(A, MAT_IGNORE_LOWER_TRIANGULAR, PETSC_TRUE));
18: rstart = 0;
20: row[0] = rstart + 0;
21: row[1] = rstart + 2;
22: col[0] = rstart + 0;
23: col[1] = rstart + 1;
24: col[2] = rstart + 3;
25: for (i = 0; i < 6; i++) {
26: for (j = 0; j < 9; j++) x[i][j] = (PetscScalar)val++;
27: }
28: PetscCall(MatSetValuesBlocked(A, 2, row, 3, col, &x[0][0], INSERT_VALUES));
29: PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
30: PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
31: PetscCall(MatView(A, PETSC_VIEWER_BINARY_WORLD));
33: PetscCall(MatDestroy(&A));
34: PetscCall(PetscFinalize());
35: return 0;
36: }