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Sacado_Fad_Exp_Expression.hpp
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1// @HEADER
2// ***********************************************************************
3//
4// Sacado Package
5// Copyright (2006) Sandia Corporation
6//
7// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
8// the U.S. Government retains certain rights in this software.
9//
10// This library is free software; you can redistribute it and/or modify
11// it under the terms of the GNU Lesser General Public License as
12// published by the Free Software Foundation; either version 2.1 of the
13// License, or (at your option) any later version.
14//
15// This library is distributed in the hope that it will be useful, but
16// WITHOUT ANY WARRANTY; without even the implied warranty of
17// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18// Lesser General Public License for more details.
19//
20// You should have received a copy of the GNU Lesser General Public
21// License along with this library; if not, write to the Free Software
22// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
23// USA
24// Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
25// (etphipp@sandia.gov).
26//
27// ***********************************************************************
28// @HEADER
29
30#ifndef SACADO_FAD_EXP_EXPRESSION_HPP
31#define SACADO_FAD_EXP_EXPRESSION_HPP
32
33#include "Sacado_Traits.hpp"
34
35namespace Sacado {
36
37 namespace Fad {
38 namespace Exp {
39
41
54 template <typename T>
55 class Expr {
56 public:
57
59
63 typedef T derived_type;
64
66
71 const derived_type& derived() const {
72 return static_cast<const derived_type&>(*this);
73 }
74
76
81 const volatile derived_type& derived() const volatile {
82 return static_cast<const volatile derived_type&>(*this);
83 }
84 };
85
87
92 template <typename T>
93 struct ExprLevel {
94 static constexpr unsigned value = 0;
95 };
96
97 template <typename T>
98 struct ExprLevel< Expr<T> > {
99 static constexpr unsigned value =
101 };
102
104 template <typename T>
105 struct IsFadExpr {
106 static constexpr bool value = false;
107 };
108
109 template <typename T>
110 struct IsFadExpr< Expr<T> > {
111 static constexpr bool value = true;
112 };
113
114 // Tag for delegating expression template specializations
116
117 } // namespace Exp
118 } // namespace Fad
119
120 template <typename T>
121 struct IsExpr< Fad::Exp::Expr<T> > {
122 static constexpr bool value = true;
123 };
124
125 template <typename T>
126 struct BaseExprType< Fad::Exp::Expr<T> > {
127 typedef typename BaseExprType<T>::type type;
128 };
129
130} // namespace Sacado
131
133
134#endif // SACADO_FAD_EXP_EXPRESSION_HPP
#define SACADO_INLINE_FUNCTION
#define T
Definition: Sacado_rad.hpp:573
Wrapper for a generic expression template.
T derived_type
Typename of derived object, returned by derived()
SACADO_INLINE_FUNCTION const derived_type & derived() const
Return derived object.
SACADO_INLINE_FUNCTION const volatile derived_type & derived() const volatile
Return derived object.
Get the base Fad type from a view/expression.
Meta-function for determining nesting with an expression.
Determine whether a given type is an expression.
Is a type an expression.
static const bool value