Actual source code: ex1.c

petsc-3.14.6 2021-03-30
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  2: static char help[] = "Tests the creation of a PC context.\n\n";

  4: #include <petscpc.h>

  6: int main(int argc,char **args)
  7: {
  8:   PC             pc;
 10:   PetscInt       n = 5;
 11:   Mat            mat;

 13:   PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr;
 14:   PCCreate(PETSC_COMM_WORLD,&pc);
 15:   PCSetType(pc,PCNONE);

 17:   /* Vector and matrix must be set before calling PCSetUp */
 18:   MatCreateSeqAIJ(PETSC_COMM_SELF,n,n,3,NULL,&mat);
 19:   MatAssemblyBegin(mat,MAT_FINAL_ASSEMBLY);
 20:   MatAssemblyEnd(mat,MAT_FINAL_ASSEMBLY);
 21:   PCSetOperators(pc,mat,mat);
 22:   PCSetUp(pc);
 23:   MatDestroy(&mat);
 24:   PCDestroy(&pc);
 25:   PetscFinalize();
 26:   return ierr;
 27: }





 33: /*TEST

 35:    test:

 37: TEST*/