KokkosConstantFunction.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 "KokkosFunction.h"
 
class KokkosConstantFunction : public Moose::Kokkos::FunctionBase
{
public:
  static InputParameters validParams();
 
  KokkosConstantFunction(const InputParameters & parameters);
 
  using Real3 = Moose::Kokkos::Real3;
 
  KOKKOS_FUNCTION Real value(Real, Real3) const { return _value; }
  KOKKOS_FUNCTION Real3 gradient(Real, Real3) const { return Real3(0); }
  KOKKOS_FUNCTION Real timeDerivative(Real, Real3) const { return 0; }
  KOKKOS_FUNCTION Real timeIntegral(Real t1, Real t2, Real3) const { return _value * (t2 - t1); }
 
protected:
  Moose::Kokkos::Scalar<const Real> _value;
};