Actual source code: ex1.c
1: static char help[] = "Tests the creation of a PC context.\n\n";
3: #include <petscpc.h>
5: int main(int argc, char **args)
6: {
7: PC pc;
8: PetscInt n = 5;
9: Mat mat;
11: PetscFunctionBeginUser;
12: PetscCall(PetscInitialize(&argc, &args, NULL, help));
13: PetscCall(PCCreate(PETSC_COMM_WORLD, &pc));
14: PetscCall(PCSetType(pc, PCNONE));
16: /* Vector and matrix must be set before calling PCSetUp */
17: PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF, n, n, 3, NULL, &mat));
18: PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));
19: PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));
20: PetscCall(PCSetOperators(pc, mat, mat));
21: PetscCall(PCSetUp(pc));
22: PetscCall(MatDestroy(&mat));
23: PetscCall(PCDestroy(&pc));
24: PetscCall(PetscFinalize());
25: return 0;
26: }
28: /*TEST
30: test:
32: TEST*/