1 /*
 2  *   Copyright (c) 2007, Michael Lehn
 3  *
 4  *   All rights reserved.
 5  *
 6  *   Redistribution and use in source and binary forms, with or without
 7  *   modification, are permitted provided that the following conditions
 8  *   are met:
 9  *
10  *   1) Redistributions of source code must retain the above copyright
11  *      notice, this list of conditions and the following disclaimer.
12  *   2) Redistributions in binary form must reproduce the above copyright
13  *      notice, this list of conditions and the following disclaimer in
14  *      the documentation and/or other materials provided with the
15  *      distribution.
16  *   3) Neither the name of the FLENS development group nor the names of
17  *      its contributors may be used to endorse or promote products derived
18  *      from this software without specific prior written permission.
19  *
20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #ifndef FLENS_SCALARTYPES_IMPL_SCALARCLOSURE_H
34 #define FLENS_SCALARTYPES_IMPL_SCALARCLOSURE_H 1
35 
36 #include <flens/aux/constref.h>
37 #include <flens/aux/promotion.h>
38 #include <flens/aux/elementtype.h>
39 #include <flens/scalartypes/scalar.h>
40 
41 namespace flens {
42 
43 template <typename Op, typename L, typename R>
44 class ScalarClosure
45     : public Scalar<ScalarClosure<Op, L, R> >
46 {
47     public:
48         typedef typename ElementType<ScalarClosure>::Type  ElementType;
49 
50         ScalarClosure(typename ConstRef<L>::Type l,
51                       typename ConstRef<R>::Type r);
52 
53         typename ConstRef<L>::Type
54         left() const;
55 
56         typename ConstRef<R>::Type
57         right() const;
58 
59         const ElementType
60         value() const;
61 
62     private:
63         typename ConstRef<L>::Type _left;
64         typename ConstRef<R>::Type _right;
65 };
66 
67 template <typename Op, typename L, typename R>
68 struct ElementType<ScalarClosure<Op, L, R> >
69 {
70     typedef typename L::ElementType             LT;
71     typedef typename R::ElementType             RT;
72     typedef typename Promotion<LT, RT>::Type    Type;
73 };
74 
75 // namespace flens
76 
77 #endif // FLENS_SCALARTYPES_IMPL_SCALARCLOSURE_H