xref: /petsc/src/ksp/pc/tests/ex1.c (revision 5f80ce2ab25dff0f4601e710601cbbcecf323266)
1c4762a1bSJed Brown 
2c4762a1bSJed Brown static char help[] = "Tests the creation of a PC context.\n\n";
3c4762a1bSJed Brown 
4c4762a1bSJed Brown #include <petscpc.h>
5c4762a1bSJed Brown 
6c4762a1bSJed Brown int main(int argc,char **args)
7c4762a1bSJed Brown {
8c4762a1bSJed Brown   PC             pc;
9c4762a1bSJed Brown   PetscErrorCode ierr;
10c4762a1bSJed Brown   PetscInt       n = 5;
11c4762a1bSJed Brown   Mat            mat;
12c4762a1bSJed Brown 
13c4762a1bSJed Brown   ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr;
14*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PCCreate(PETSC_COMM_WORLD,&pc));
15*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PCSetType(pc,PCNONE));
16c4762a1bSJed Brown 
17c4762a1bSJed Brown   /* Vector and matrix must be set before calling PCSetUp */
18*5f80ce2aSJacob Faibussowitsch   CHKERRQ(MatCreateSeqAIJ(PETSC_COMM_SELF,n,n,3,NULL,&mat));
19*5f80ce2aSJacob Faibussowitsch   CHKERRQ(MatAssemblyBegin(mat,MAT_FINAL_ASSEMBLY));
20*5f80ce2aSJacob Faibussowitsch   CHKERRQ(MatAssemblyEnd(mat,MAT_FINAL_ASSEMBLY));
21*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PCSetOperators(pc,mat,mat));
22*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PCSetUp(pc));
23*5f80ce2aSJacob Faibussowitsch   CHKERRQ(MatDestroy(&mat));
24*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PCDestroy(&pc));
25c4762a1bSJed Brown   ierr = PetscFinalize();
26c4762a1bSJed Brown   return ierr;
27c4762a1bSJed Brown }
28c4762a1bSJed Brown 
29c4762a1bSJed Brown /*TEST
30c4762a1bSJed Brown 
31c4762a1bSJed Brown    test:
32c4762a1bSJed Brown 
33c4762a1bSJed Brown TEST*/
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