NaNInterface.h

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* 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
 
#include "InputParameters.h"
#include "MooseObject.h"
 
class NaNInterface;
 
template <>
InputParameters validParams<NaNInterface>();
 
class NaNInterface
{
public:
  NaNInterface(const MooseObject * moose_object);
 
protected:
  enum NaNMessage
  {
    NAN_MESSAGE_NONE = 0,
    NAN_MESSAGE_WARNING = 1,
    NAN_MESSAGE_ERROR = 2
  };
 
  const MooseObject * _moose_object;
 
  const enum NaNMessage _emit_on_nan;
 
  Real getNaN() const { return getNaN("A NaN was produced."); }
 
  template <typename... Args>
  Real getNaN(Args &&... args) const
  {
    switch (_emit_on_nan)
    {
      case (NAN_MESSAGE_WARNING):
        mooseWarning(_moose_object->name(), ": ", std::forward<Args>(args)...);
        break;
      case (NAN_MESSAGE_ERROR):
        mooseError(_moose_object->name(), ": ", std::forward<Args>(args)...);
        break;
      default:
        break;
    }
    // return a quiet NaN
    return std::nan("");
  }
};