ConstantFunction.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
 
#include "Function.h"
 
class ConstantFunction : public Function
{
public:
  static InputParameters validParams();
 
  ConstantFunction(const InputParameters & parameters);
 
  using Function::value;
  virtual Real value(Real t, const Point & p) const override;
  virtual ADReal value(const ADReal & t, const ADPoint & p) const override;
 
  virtual Real timeDerivative(Real t, const Point & p) const override;
  virtual RealVectorValue gradient(Real t, const Point & p) const override;
 
  virtual Real timeIntegral(Real t1, Real t2, const Point & p) const override;
 
protected:
  const Real & _value;
};