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88 lines
1.9 KiB
88 lines
1.9 KiB
11 years ago
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/*
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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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/*! \file for_each.h
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* \brief Sequential implementations of for_each functions.
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*/
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#pragma once
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#include <thrust/detail/config.h>
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#include <thrust/detail/function.h>
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namespace thrust
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{
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namespace system
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{
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namespace detail
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{
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namespace internal
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{
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namespace scalar
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{
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template<typename InputIterator,
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typename UnaryFunction>
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InputIterator for_each(InputIterator first,
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InputIterator last,
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UnaryFunction f)
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{
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// wrap f
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thrust::detail::host_function<
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UnaryFunction,
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void
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> wrapped_f(f);
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for(; first != last; ++first)
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{
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wrapped_f(*first);
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}
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return first;
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} // end for_each()
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template<typename InputIterator,
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typename Size,
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typename UnaryFunction>
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InputIterator for_each_n(InputIterator first,
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Size n,
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UnaryFunction f)
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{
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// wrap f
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thrust::detail::host_function<
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UnaryFunction,
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void
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> wrapped_f(f);
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for(Size i = 0; i != n; i++)
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{
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// we can dereference an OutputIterator if f does not
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// try to use the reference for anything besides assignment
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wrapped_f(*first);
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++first;
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}
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return first;
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} // end for_each_n()
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} // end namespace scalar
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} // end namespace internal
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} // end namespace detail
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} // end namespace system
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} // end namespace thrust
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