/usr/include/trilinos/Sacado_ELRFad_GeneralFadExpr.hpp is in libtrilinos-dev 10.4.0.dfsg-1ubuntu2.
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// $Source$
// @HEADER
// ***********************************************************************
//
// Sacado Package
// Copyright (2006) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
// (etphipp@sandia.gov).
//
// ***********************************************************************
// @HEADER
#ifndef SACADO_ELRFAD_GENERALFADEXPR_HPP
#define SACADO_ELRFAD_GENERALFADEXPR_HPP
#include "Sacado_ELRFad_GeneralFad.hpp"
namespace Sacado {
namespace ELRFad {
//! GeneralFad expression template specialization
/*!
* This template class represents a simple GeneralFad expression and
* mixes-in the GeneralFad interface and the expression template
* interface.
*/
template <typename T, typename Storage>
class Expr< GeneralFad<T,Storage> > : public GeneralFad<T,Storage> {
public:
//! Typename of values
typedef T value_type;
//! Typename of base-expressions
typedef GeneralFad<T,Storage> base_expr_type;
//! Number of arguments
static const int num_args = 1;
//! Default constructor
Expr() :
GeneralFad<T,Storage>() {}
//! Constructor with supplied value \c x
/*!
* Initializes value to \c x and derivative array is empty
*/
Expr(const T & x) :
GeneralFad<T,Storage>(x) {}
//! Constructor with size \c sz and value \c x
/*!
* Initializes value to \c x and derivative array 0 of length \c sz
*/
Expr(const int sz, const T & x) :
GeneralFad<T,Storage>(sz,x) {}
//! Constructor with size \c sz, index \c i, and value \c x
/*!
* Initializes value to \c x and derivative array of length \c sz
* as row \c i of the identity matrix, i.e., sets derivative component
* \c i to 1 and all other's to zero.
*/
Expr(const int sz, const int i, const T & x) :
GeneralFad<T,Storage>(sz,i,x) {}
//! Copy constructor
Expr(const Expr& x) :
GeneralFad<T,Storage>(x) {}
//! Copy constructor from any Expression object
template <typename S> Expr(const Expr<S>& x) :
GeneralFad<T,Storage>(x) {}
//! Destructor
~Expr() {}
//! Return partials w.r.t. arguments
void computePartials(const T& bar, T partials[]) const {
partials[0] = bar;
}
//! Return tangent component \c i of arguments
void getTangents(int i, T dots[]) const {
if (i<this->size())
dots[0] = this->fastAccessDx(i);
else
dots[0] = 0.0;
}
//! Return whether argument is active
template <int Arg>
bool isActive() const { return this->size() > 0; }
//! Return tangent component \c i of argument \c Arg
template <int Arg>
T getTangent(int i) const { return this->fastAccessDx(i); }
}; // class Expr<GeneralFad>
//! Specialization of %ExprPromote to GeneralFad types
template <typename T, typename S>
struct ExprPromote< GeneralFad<T,S>, T > {
typedef GeneralFad<T,S> type;
};
//! Specialization of %ExprPromote to GeneralFad types
template <typename T, typename S>
struct ExprPromote< T, GeneralFad<T,S> > {
typedef GeneralFad<T,S> type;
};
} // namespace ELRFad
} // namespace Sacado
#include "Sacado_ELRFad_Ops.hpp"
#endif // SACADO_ELRFAD_GENERALFADEXPR_HPP
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