Actual source code: ex70.c

  1: /*$Id: ex70.c,v 1.13 2001/08/07 03:03:07 balay Exp $*/

  3: static char help[] = "Tests Vec/MatSetValues() with negative row and column indices.nn";

 5:  #include petscmat.h
 6:  #include petscpc.h

  8: int main(int argc,char **args)
  9: {
 10:   Mat         C;
 11:   int         i[2],j[2],ierr;
 12:   PetscScalar v[] = {1.0,2.0,3.0,4.0};
 13:   Vec         x;

 15:   PetscInitialize(&argc,&args,(char *)0,help);

 17:   MatCreate(PETSC_COMM_WORLD,PETSC_DECIDE,PETSC_DECIDE,3,3,&C);
 18:   MatSetFromOptions(C);
 19:   VecCreateSeq(PETSC_COMM_WORLD,3,&x);
 20: 
 21:   i[0] = 1; i[1] = -1; j[0] = 1; j[1] = 2;
 22:   MatSetValues(C,2,i,2,j,v,INSERT_VALUES);
 23:   MatSetValues(C,2,j,2,i,v,INSERT_VALUES);
 24:   VecSetValues(x,2,i,v,INSERT_VALUES);
 25: 
 26:   MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);
 27:   MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);

 29:   MatView(C,PETSC_VIEWER_STDOUT_WORLD);
 30:   VecView(x,PETSC_VIEWER_STDOUT_WORLD);

 32:   VecDestroy(x);
 33:   MatDestroy(C);

 35:   PetscFinalize();
 36:   return 0;
 37: }

 39: