static char help[] = "Tests ISLocalToGlobalMappingCreateIS() for bs > 1.\n\n";

#include <petscis.h>
#include <petscviewer.h>

int main(int argc, char **argv)
{
  PetscInt               bs = 2, n = 3, ix[3] = {1, 7, 9}, iy[2] = {0, 2}, mp[2];
  IS                     isx;
  ISLocalToGlobalMapping ltog;

  PetscFunctionBeginUser;
  PetscCall(PetscInitialize(&argc, &argv, NULL, help));

  PetscCall(ISCreateBlock(PETSC_COMM_SELF, bs, n, ix, PETSC_COPY_VALUES, &isx));
  PetscCall(ISLocalToGlobalMappingCreateIS(isx, &ltog));

  PetscCall(PetscIntView(2, iy, PETSC_VIEWER_STDOUT_WORLD));
  PetscCall(ISLocalToGlobalMappingApply(ltog, 2, iy, mp));
  PetscCall(PetscIntView(2, mp, PETSC_VIEWER_STDOUT_WORLD));

  PetscCall(PetscIntView(2, iy, PETSC_VIEWER_STDOUT_WORLD));
  PetscCall(ISLocalToGlobalMappingApplyBlock(ltog, 2, iy, mp));
  PetscCall(PetscIntView(2, mp, PETSC_VIEWER_STDOUT_WORLD));

  PetscCall(ISLocalToGlobalMappingDestroy(&ltog));
  PetscCall(ISDestroy(&isx));

  PetscCall(PetscFinalize());
  return 0;
}

/*TEST

   test:

TEST*/