NodalConstraintUtils.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

namespace // Anonymous namespace for helpers
{
struct CompareElemsByLevel
{
  bool operator()(const Elem * a, const Elem * b) const
  {
    libmesh_assert(a);
    libmesh_assert(b);
    const unsigned int al = a->level(), bl = b->level();
    const dof_id_type aid = a->id(), bid = b->id();

    return (al == bl) ? aid < bid : al < bl;
  }
};

} // anonymous namespace