File size: 2,013 Bytes
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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 reduce.h
* \brief Sequential implementation of reduce algorithm.
*/
#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/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 OutputType,
typename BinaryFunction>
__host__ __device__
OutputType reduce(sequential::execution_policy<DerivedPolicy> &,
InputIterator begin,
InputIterator end,
OutputType init,
BinaryFunction binary_op)
{
// wrap binary_op
thrust::detail::wrapped_function<
BinaryFunction,
OutputType
> wrapped_binary_op(binary_op);
// initialize the result
OutputType result = init;
while(begin != end)
{
result = wrapped_binary_op(result, *begin);
++begin;
} // end while
return result;
}
} // end namespace sequential
} // end namespace detail
} // end namespace system
THRUST_NAMESPACE_END
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