Actual source code: ex40.c

petsc-3.5.4 2015-05-23
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  2: static char help[] = "Tests taking part of existing array to create a new vector.\n\n";

  4: #include <petscvec.h>

  8: int main(int argc,char **argv)
  9: {
 11:   PetscMPIInt    size;
 12:   PetscInt       n = 10,i;
 13:   PetscScalar    array[10];
 14:   Vec            x;

 16:   PetscInitialize(&argc,&argv,(char*)0,help);
 17:   MPI_Comm_size(PETSC_COMM_WORLD,&size);
 18:   if (size != 1) SETERRQ(PETSC_COMM_SELF,1,"This is a uniprocessor example only!");

 20:   /* create vector */
 21:   for (i=0; i<n; i++) array[i] = i;
 22:   n = n-1;

 24:   VecCreateSeqWithArray(PETSC_COMM_SELF,1,n,array+1,&x);
 25:   VecView(x,PETSC_VIEWER_STDOUT_SELF);
 26:   VecDestroy(&x);
 27:   PetscFinalize();
 28:   return 0;
 29: }