Date: 2026-05-01T06:12:05+00:00

Actual source code: ex2.c

      1: static char help[] = "Demonstrates PetscOptionsCreateViewer().\n\n";

      3: #include <petscviewer.h>

      5: int main(int argc, char **args)
      6: {
      7:   PetscViewer       viewer;
      8:   PetscViewerFormat format;

     10:   PetscFunctionBeginUser;
     11:   PetscCall(PetscInitialize(&argc, &args, NULL, help));
     12:   PetscCall(PetscOptionsCreateViewer(PETSC_COMM_WORLD, NULL, NULL, "-myviewer", &viewer, &format, NULL));
     13:   PetscCall(PetscViewerPushFormat(viewer, format));
     14:   PetscCall(PetscViewerView(viewer, PETSC_VIEWER_STDOUT_WORLD));
     15:   PetscCall(PetscViewerPopFormat(viewer));
     16:   PetscCall(PetscViewerDestroy(&viewer));
     17:   PetscCall(PetscFinalize());
     18:   return 0;
     19: }

     21: /*TEST

     23:    test:
     24:       args: -myviewer ascii

     26:    testset:
     27:       args: -myviewer hdf5:my.hdf5:hdf5_xdmf
     28:       requires: hdf5
     29:       test:
     30:         suffix: 2a
     31:         args: -viewer_hdf5_base_dimension2 false -viewer_hdf5_sp_output true -viewer_hdf5_collective false
     32:       test:
     33:         suffix: 2b
     34:         args: -viewer_hdf5_base_dimension2 true -viewer_hdf5_sp_output false -viewer_hdf5_collective true

     36: TEST*/