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75 lines
1.6 KiB
75 lines
1.6 KiB
/* |
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* Copyright 2008-2012 NVIDIA Corporation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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// Portions of this code are derived from |
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// |
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// Manjunath Kudlur's Carbon library |
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// |
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// and |
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// |
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// Based on Boost.Phoenix v1.2 |
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// Copyright (c) 2001-2002 Joel de Guzman |
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#pragma once |
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#include <thrust/detail/config.h> |
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#include <thrust/tuple.h> |
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namespace thrust |
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{ |
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namespace detail |
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{ |
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namespace functional |
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{ |
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template<unsigned int i, typename Env> |
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struct argument_helper |
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{ |
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typedef typename thrust::tuple_element<i,Env>::type type; |
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}; |
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template<unsigned int i> |
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struct argument_helper<i,thrust::null_type> |
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{ |
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typedef thrust::null_type type; |
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}; |
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template<unsigned int i> |
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class argument |
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{ |
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public: |
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template<typename Env> |
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struct result |
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: argument_helper<i,Env> |
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{ |
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}; |
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__host__ __device__ |
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argument(void){} |
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template<typename Env> |
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__host__ __device__ |
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typename result<Env>::type eval(const Env &e) const |
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{ |
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return thrust::get<i>(e); |
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} // end eval() |
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}; // end argument |
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} // end functional |
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} // end detail |
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} // end thrust |
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