1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/*
* Copyright 2008-2013 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Portions of this code are derived from
//
// Manjunath Kudlur's Carbon library
//
// and
//
// Based on Boost.Phoenix v1.2
// Copyright (c) 2001-2002 Joel de Guzman
#pragma once
#include <thrust/detail/config.h>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#include <thrust/tuple.h>
THRUST_NAMESPACE_BEGIN
namespace detail
{
namespace functional
{
template<unsigned int i, typename Env>
struct argument_helper
{
typedef typename thrust::tuple_element<i,Env>::type type;
};
template<unsigned int i>
struct argument_helper<i,thrust::tuple<>>
{
typedef thrust::tuple<> type;
};
template<unsigned int i>
class argument
{
public:
template<typename Env>
struct result
: argument_helper<i,Env>
{
};
__host__ __device__
constexpr argument(){}
template<typename Env>
__host__ __device__
typename result<Env>::type eval(const Env &e) const
{
return thrust::get<i>(e);
} // end eval()
}; // end argument
} // end functional
} // end detail
THRUST_NAMESPACE_END
|
