GOSTCoin CUDA miner project, compatible with most nvidia cards, containing only gostd algo
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/*
* Copyright 2008-2012 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.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/system/detail/generic/unique_by_key.h>
#include <thrust/iterator/iterator_traits.h>
#include <thrust/iterator/detail/minimum_system.h>
#include <thrust/iterator/zip_iterator.h>
#include <thrust/transform.h>
#include <thrust/detail/temporary_array.h>
#include <thrust/detail/internal_functional.h>
#include <thrust/detail/copy_if.h>
#include <thrust/unique.h>
namespace thrust
{
namespace system
{
namespace detail
{
namespace generic
{
template<typename ExecutionPolicy,
typename ForwardIterator1,
typename ForwardIterator2>
thrust::pair<ForwardIterator1,ForwardIterator2>
unique_by_key(thrust::execution_policy<ExecutionPolicy> &exec,
ForwardIterator1 keys_first,
ForwardIterator1 keys_last,
ForwardIterator2 values_first)
{
typedef typename thrust::iterator_traits<ForwardIterator1>::value_type KeyType;
return thrust::unique_by_key(exec, keys_first, keys_last, values_first, thrust::equal_to<KeyType>());
} // end unique_by_key()
template<typename ExecutionPolicy,
typename ForwardIterator1,
typename ForwardIterator2,
typename BinaryPredicate>
thrust::pair<ForwardIterator1,ForwardIterator2>
unique_by_key(thrust::execution_policy<ExecutionPolicy> &exec,
ForwardIterator1 keys_first,
ForwardIterator1 keys_last,
ForwardIterator2 values_first,
BinaryPredicate binary_pred)
{
typedef typename thrust::iterator_traits<ForwardIterator1>::value_type InputType1;
typedef typename thrust::iterator_traits<ForwardIterator2>::value_type InputType2;
ForwardIterator2 values_last = values_first + (keys_last - keys_first);
thrust::detail::temporary_array<InputType1,ExecutionPolicy> keys(exec, keys_first, keys_last);
thrust::detail::temporary_array<InputType2,ExecutionPolicy> vals(exec, values_first, values_last);
return thrust::unique_by_key_copy(exec, keys.begin(), keys.end(), vals.begin(), keys_first, values_first, binary_pred);
} // end unique_by_key()
template<typename ExecutionPolicy,
typename InputIterator1,
typename InputIterator2,
typename OutputIterator1,
typename OutputIterator2>
thrust::pair<OutputIterator1,OutputIterator2>
unique_by_key_copy(thrust::execution_policy<ExecutionPolicy> &exec,
InputIterator1 keys_first,
InputIterator1 keys_last,
InputIterator2 values_first,
OutputIterator1 keys_output,
OutputIterator2 values_output)
{
typedef typename thrust::iterator_traits<InputIterator1>::value_type KeyType;
return thrust::unique_by_key_copy(exec, keys_first, keys_last, values_first, keys_output, values_output, thrust::equal_to<KeyType>());
} // end unique_by_key_copy()
template<typename ExecutionPolicy,
typename InputIterator1,
typename InputIterator2,
typename OutputIterator1,
typename OutputIterator2,
typename BinaryPredicate>
thrust::pair<OutputIterator1,OutputIterator2>
unique_by_key_copy(thrust::execution_policy<ExecutionPolicy> &exec,
InputIterator1 keys_first,
InputIterator1 keys_last,
InputIterator2 values_first,
OutputIterator1 keys_output,
OutputIterator2 values_output,
BinaryPredicate binary_pred)
{
typedef typename thrust::iterator_traits<InputIterator1>::difference_type difference_type;
// empty sequence
if(keys_first == keys_last)
return thrust::make_pair(keys_output, values_output);
difference_type n = thrust::distance(keys_first, keys_last);
thrust::detail::temporary_array<int,ExecutionPolicy> stencil(exec,n);
// mark first element in each group
stencil[0] = 1;
thrust::transform(exec, keys_first, keys_last - 1, keys_first + 1, stencil.begin() + 1, thrust::detail::not2(binary_pred));
thrust::zip_iterator< thrust::tuple<OutputIterator1, OutputIterator2> > result =
thrust::copy_if(exec,
thrust::make_zip_iterator(thrust::make_tuple(keys_first, values_first)),
thrust::make_zip_iterator(thrust::make_tuple(keys_first, values_first)) + n,
stencil.begin(),
thrust::make_zip_iterator(thrust::make_tuple(keys_output, values_output)),
thrust::identity<int>());
difference_type output_size = result - thrust::make_zip_iterator(thrust::make_tuple(keys_output, values_output));
return thrust::make_pair(keys_output + output_size, values_output + output_size);
} // end unique_by_key_copy()
} // end namespace generic
} // end namespace detail
} // end namespace system
} // end namespace thrust