1 2 static char help[] = "Tests the creation of a PC context.\n\n"; 3 4 #include <petscpc.h> 5 6 int main(int argc,char **args) 7 { 8 PC pc; 9 PetscInt n = 5; 10 Mat mat; 11 12 PetscFunctionBeginUser; 13 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 14 PetscCall(PCCreate(PETSC_COMM_WORLD,&pc)); 15 PetscCall(PCSetType(pc,PCNONE)); 16 17 /* Vector and matrix must be set before calling PCSetUp */ 18 PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF,n,n,3,NULL,&mat)); 19 PetscCall(MatAssemblyBegin(mat,MAT_FINAL_ASSEMBLY)); 20 PetscCall(MatAssemblyEnd(mat,MAT_FINAL_ASSEMBLY)); 21 PetscCall(PCSetOperators(pc,mat,mat)); 22 PetscCall(PCSetUp(pc)); 23 PetscCall(MatDestroy(&mat)); 24 PetscCall(PCDestroy(&pc)); 25 PetscCall(PetscFinalize()); 26 return 0; 27 } 28 29 /*TEST 30 31 test: 32 33 TEST*/ 34