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/*
* 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.
*/
/*! \file for_each.h
* \brief Sequential implementations of for_each functions.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/detail/function.h>
#include <thrust/system/detail/sequential/execution_policy.h>
THRUST_NAMESPACE_BEGIN
namespace system
{
namespace detail
{
namespace sequential
{
__thrust_exec_check_disable__
template<typename DerivedPolicy,
typename InputIterator,
typename UnaryFunction>
__host__ __device__
InputIterator for_each(sequential::execution_policy<DerivedPolicy> &,
InputIterator first,
InputIterator last,
UnaryFunction f)
{
// wrap f
thrust::detail::wrapped_function<
UnaryFunction,
void
> wrapped_f(f);
for(; first != last; ++first)
{
wrapped_f(*first);
}
return first;
} // end for_each()
template<typename DerivedPolicy,
typename InputIterator,
typename Size,
typename UnaryFunction>
__host__ __device__
InputIterator for_each_n(sequential::execution_policy<DerivedPolicy> &,
InputIterator first,
Size n,
UnaryFunction f)
{
// wrap f
thrust::detail::wrapped_function<
UnaryFunction,
void
> wrapped_f(f);
for(Size i = 0; i != n; i++)
{
// we can dereference an OutputIterator if f does not
// try to use the reference for anything besides assignment
wrapped_f(*first);
++first;
}
return first;
} // end for_each_n()
} // end namespace sequential
} // end namespace detail
} // end namespace system
THRUST_NAMESPACE_END
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