1: #pragma once

  3: #include <petscmat.h>

  5: namespace htool
  6: {
  7: template <class>
  8: class VirtualHMatrix; /* forward definition of a single needed Htool class */
  9: } // namespace htool

 11: PETSC_EXTERN PetscErrorCode MatHtoolGetHierarchicalMat(Mat, const htool::VirtualHMatrix<PetscScalar> **);