// -*- C++ -*-
-// Copyright (C) 2007 Free Software Foundation, Inc.
+// Copyright (C) 2007, 2008 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
{
// Sequential fallback.
template<typename InputIterator, typename T>
- inline T
- accumulate(InputIterator begin, InputIterator end, T init,
- __gnu_parallel::sequential_tag)
- { return _GLIBCXX_STD_P::accumulate(begin, end, init); }
+ inline T
+ accumulate(InputIterator begin, InputIterator end, T init,
+ __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::accumulate(begin, end, init); }
template<typename InputIterator, typename T, typename BinaryOperation>
- inline T
- accumulate(InputIterator begin, InputIterator end, T init,
- BinaryOperation binary_op, __gnu_parallel::sequential_tag)
- { return _GLIBCXX_STD_P::accumulate(begin, end, init, binary_op); }
+ inline T
+ accumulate(InputIterator begin, InputIterator end, T init,
+ BinaryOperation binary_op, __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::accumulate(begin, end, init, binary_op); }
// Sequential fallback for input iterator case.
template<typename InputIterator, typename T, typename IteratorTag>
- inline T
- accumulate_switch(InputIterator begin, InputIterator end, T init, IteratorTag) { return accumulate(begin, end, init, __gnu_parallel::sequential_tag()); }
-
- template<typename InputIterator, typename T, typename BinaryOperation, typename IteratorTag>
- T
- accumulate_switch(InputIterator begin, InputIterator end, T init,
- BinaryOperation binary_op, IteratorTag)
- {
- return accumulate(begin, end, init, binary_op,
- __gnu_parallel::sequential_tag());
- }
+ inline T
+ accumulate_switch(InputIterator begin, InputIterator end,
+ T init, IteratorTag)
+ { return accumulate(begin, end, init, __gnu_parallel::sequential_tag()); }
+
+ template<typename InputIterator, typename T, typename BinaryOperation,
+ typename IteratorTag>
+ T
+ accumulate_switch(InputIterator begin, InputIterator end, T init,
+ BinaryOperation binary_op, IteratorTag)
+ { return accumulate(begin, end, init, binary_op,
+ __gnu_parallel::sequential_tag()); }
// Parallel algorithm for random access iterators.
- template<typename _RandomAccessIterator, typename T, typename BinaryOperation>
- T
- accumulate_switch(_RandomAccessIterator begin, _RandomAccessIterator end,
- T init, BinaryOperation binary_op,
- random_access_iterator_tag,
- __gnu_parallel::parallelism parallelism_tag
- = __gnu_parallel::parallel_unbalanced)
- {
- if (_GLIBCXX_PARALLEL_CONDITION(static_cast<__gnu_parallel::sequence_index_t>(end - begin) >= __gnu_parallel::Settings::accumulate_minimal_n && __gnu_parallel::is_parallel(parallelism_tag)))
- {
- T res = init;
- __gnu_parallel::accumulate_selector<_RandomAccessIterator> my_selector;
- __gnu_parallel::for_each_template_random_access(begin, end, __gnu_parallel::nothing(), my_selector, __gnu_parallel::accumulate_binop_reduct<BinaryOperation>(binary_op), res, res, -1, parallelism_tag);
- return res;
- }
- else
- return accumulate(begin, end, init, binary_op,
- __gnu_parallel::sequential_tag());
- }
+ template<typename _RandomAccessIterator, typename T,
+ typename BinaryOperation>
+ T
+ accumulate_switch(_RandomAccessIterator begin, _RandomAccessIterator end,
+ T init, BinaryOperation binary_op,
+ random_access_iterator_tag,
+ __gnu_parallel::parallelism parallelism_tag
+ = __gnu_parallel::parallel_unbalanced)
+ {
+ if (_GLIBCXX_PARALLEL_CONDITION(
+ static_cast<__gnu_parallel::sequence_index_t>(end - begin)
+ >= __gnu_parallel::Settings::accumulate_minimal_n
+ && __gnu_parallel::is_parallel(parallelism_tag)))
+ {
+ T res = init;
+ __gnu_parallel::accumulate_selector<_RandomAccessIterator>
+ my_selector;
+ __gnu_parallel::
+ for_each_template_random_access(begin, end,
+ __gnu_parallel::nothing(),
+ my_selector,
+ __gnu_parallel::
+ accumulate_binop_reduct
+ <BinaryOperation>(binary_op),
+ res, res, -1, parallelism_tag);
+ return res;
+ }
+ else
+ return accumulate(begin, end, init, binary_op,
+ __gnu_parallel::sequential_tag());
+ }
// Public interface.
template<typename InputIterator, typename T>
- inline T
- accumulate(InputIterator begin, InputIterator end, T init,
- __gnu_parallel::parallelism parallelism_tag)
- {
- typedef std::iterator_traits<InputIterator> iterator_traits;
- typedef typename iterator_traits::value_type value_type;
- typedef typename iterator_traits::iterator_category iterator_category;
-
- return accumulate_switch(begin, end, init, __gnu_parallel::plus<T, value_type>(),
- iterator_category(), parallelism_tag);
- }
+ inline T
+ accumulate(InputIterator begin, InputIterator end, T init,
+ __gnu_parallel::parallelism parallelism_tag)
+ {
+ typedef std::iterator_traits<InputIterator> iterator_traits;
+ typedef typename iterator_traits::value_type value_type;
+ typedef typename iterator_traits::iterator_category iterator_category;
+
+ return accumulate_switch(begin, end, init,
+ __gnu_parallel::plus<T, value_type>(),
+ iterator_category(), parallelism_tag);
+ }
template<typename InputIterator, typename T>
- inline T
- accumulate(InputIterator begin, InputIterator end, T init)
- {
- typedef std::iterator_traits<InputIterator> iterator_traits;
- typedef typename iterator_traits::value_type value_type;
- typedef typename iterator_traits::iterator_category iterator_category;
-
- return accumulate_switch(begin, end, init, __gnu_parallel::plus<T, value_type>(),
- iterator_category());
- }
+ inline T
+ accumulate(InputIterator begin, InputIterator end, T init)
+ {
+ typedef std::iterator_traits<InputIterator> iterator_traits;
+ typedef typename iterator_traits::value_type value_type;
+ typedef typename iterator_traits::iterator_category iterator_category;
+
+ return accumulate_switch(begin, end, init,
+ __gnu_parallel::plus<T, value_type>(),
+ iterator_category());
+ }
template<typename InputIterator, typename T, typename BinaryOperation>
- inline T
- accumulate(InputIterator begin, InputIterator end, T init,
- BinaryOperation binary_op,
- __gnu_parallel::parallelism parallelism_tag)
- {
- typedef iterator_traits<InputIterator> iterator_traits;
- typedef typename iterator_traits::iterator_category iterator_category;
- return accumulate_switch(begin, end, init, binary_op,
- iterator_category(), parallelism_tag);
- }
+ inline T
+ accumulate(InputIterator begin, InputIterator end, T init,
+ BinaryOperation binary_op,
+ __gnu_parallel::parallelism parallelism_tag)
+ {
+ typedef iterator_traits<InputIterator> iterator_traits;
+ typedef typename iterator_traits::iterator_category iterator_category;
+ return accumulate_switch(begin, end, init, binary_op,
+ iterator_category(), parallelism_tag);
+ }
template<typename InputIterator, typename T, typename BinaryOperation>
- inline T
- accumulate(InputIterator begin, InputIterator end, T init,
- BinaryOperation binary_op)
- {
- typedef iterator_traits<InputIterator> iterator_traits;
- typedef typename iterator_traits::iterator_category iterator_category;
- return accumulate_switch(begin, end, init, binary_op,
- iterator_category());
- }
+ inline T
+ accumulate(InputIterator begin, InputIterator end, T init,
+ BinaryOperation binary_op)
+ {
+ typedef iterator_traits<InputIterator> iterator_traits;
+ typedef typename iterator_traits::iterator_category iterator_category;
+ return accumulate_switch(begin, end, init, binary_op,
+ iterator_category());
+ }
// Sequential fallback.
template<typename InputIterator1, typename InputIterator2, typename T>
- inline T
- inner_product(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, T init, __gnu_parallel::sequential_tag)
- { return _GLIBCXX_STD_P::inner_product(first1, last1, first2, init); }
-
- template<typename InputIterator1, typename InputIterator2, typename T, typename BinaryFunction1, typename BinaryFunction2>
- inline T
- inner_product(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, T init, BinaryFunction1 binary_op1,
- BinaryFunction2 binary_op2, __gnu_parallel::sequential_tag)
- {
- return _GLIBCXX_STD_P::inner_product(first1, last1, first2, init,
- binary_op1, binary_op2);
- }
+ inline T
+ inner_product(InputIterator1 first1, InputIterator1 last1,
+ InputIterator2 first2, T init,
+ __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::inner_product(first1, last1, first2, init); }
+
+ template<typename InputIterator1, typename InputIterator2, typename T,
+ typename BinaryFunction1, typename BinaryFunction2>
+ inline T
+ inner_product(InputIterator1 first1, InputIterator1 last1,
+ InputIterator2 first2, T init, BinaryFunction1 binary_op1,
+ BinaryFunction2 binary_op2, __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::inner_product(first1, last1, first2, init,
+ binary_op1, binary_op2); }
// Parallel algorithm for random access iterators.
- template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename T, typename BinaryFunction1, typename BinaryFunction2>
- T
- inner_product_switch(RandomAccessIterator1 first1, RandomAccessIterator1 last1, RandomAccessIterator2 first2, T init, BinaryFunction1 binary_op1, BinaryFunction2 binary_op2, random_access_iterator_tag, random_access_iterator_tag, __gnu_parallel::parallelism parallelism_tag = __gnu_parallel::parallel_unbalanced)
- {
- if (_GLIBCXX_PARALLEL_CONDITION((last1 - first1) >= __gnu_parallel::Settings::accumulate_minimal_n && __gnu_parallel::is_parallel(parallelism_tag)))
- {
- T res = init;
- __gnu_parallel::inner_product_selector<RandomAccessIterator1, RandomAccessIterator2, T> my_selector(first1, first2);
- __gnu_parallel::for_each_template_random_access(first1, last1, binary_op2, my_selector, binary_op1, res, res, -1, parallelism_tag);
- return res;
- }
- else
- return inner_product(first1, last1, first2, init,
- __gnu_parallel::sequential_tag());
- }
+ template<typename RandomAccessIterator1, typename RandomAccessIterator2,
+ typename T, typename BinaryFunction1, typename BinaryFunction2>
+ T
+ inner_product_switch(RandomAccessIterator1 first1,
+ RandomAccessIterator1 last1,
+ RandomAccessIterator2 first2, T init,
+ BinaryFunction1 binary_op1,
+ BinaryFunction2 binary_op2,
+ random_access_iterator_tag,
+ random_access_iterator_tag,
+ __gnu_parallel::parallelism parallelism_tag
+ = __gnu_parallel::parallel_unbalanced)
+ {
+ if (_GLIBCXX_PARALLEL_CONDITION((last1 - first1)
+ >= __gnu_parallel::Settings::
+ accumulate_minimal_n
+ && __gnu_parallel::
+ is_parallel(parallelism_tag)))
+ {
+ T res = init;
+ __gnu_parallel::
+ inner_product_selector<RandomAccessIterator1,
+ RandomAccessIterator2, T> my_selector(first1, first2);
+ __gnu_parallel::
+ for_each_template_random_access(first1, last1, binary_op2,
+ my_selector, binary_op1,
+ res, res, -1, parallelism_tag);
+ return res;
+ }
+ else
+ return inner_product(first1, last1, first2, init,
+ __gnu_parallel::sequential_tag());
+ }
// No parallelism for input iterators.
- template<typename InputIterator1, typename InputIterator2, typename T, typename BinaryFunction1, typename BinaryFunction2, typename IteratorTag1, typename IteratorTag2>
- inline T
- inner_product_switch(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, T init,
- BinaryFunction1 binary_op1, BinaryFunction2 binary_op2,
- IteratorTag1, IteratorTag2)
- {
- return inner_product(first1, last1, first2, init, binary_op1, binary_op2,
- __gnu_parallel::sequential_tag());
- }
-
- template<typename InputIterator1, typename InputIterator2, typename T, typename BinaryFunction1, typename BinaryFunction2>
- inline T
- inner_product(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, T init, BinaryFunction1 binary_op1,
- BinaryFunction2 binary_op2,
- __gnu_parallel::parallelism parallelism_tag)
- {
- typedef iterator_traits<InputIterator1> traits1_type;
- typedef typename traits1_type::iterator_category iterator1_category;
-
- typedef iterator_traits<InputIterator2> traits2_type;
- typedef typename traits2_type::iterator_category iterator2_category;
-
- return inner_product_switch(first1, last1, first2, init, binary_op1,
- binary_op2, iterator1_category(),
- iterator2_category(), parallelism_tag);
- }
-
- template<typename InputIterator1, typename InputIterator2, typename T, typename BinaryFunction1, typename BinaryFunction2>
- inline T
- inner_product(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, T init, BinaryFunction1 binary_op1,
- BinaryFunction2 binary_op2)
- {
- typedef iterator_traits<InputIterator1> traits1_type;
- typedef typename traits1_type::iterator_category iterator1_category;
-
- typedef iterator_traits<InputIterator2> traits2_type;
- typedef typename traits2_type::iterator_category iterator2_category;
-
- return inner_product_switch(first1, last1, first2, init, binary_op1,
- binary_op2, iterator1_category(),
- iterator2_category());
- }
+ template<typename InputIterator1, typename InputIterator2, typename T,
+ typename BinaryFunction1, typename BinaryFunction2,
+ typename IteratorTag1, typename IteratorTag2>
+ inline T
+ inner_product_switch(InputIterator1 first1, InputIterator1 last1,
+ InputIterator2 first2, T init,
+ BinaryFunction1 binary_op1,
+ BinaryFunction2 binary_op2,
+ IteratorTag1, IteratorTag2)
+ { return inner_product(first1, last1, first2, init,
+ binary_op1, binary_op2,
+ __gnu_parallel::sequential_tag()); }
+
+ template<typename InputIterator1, typename InputIterator2, typename T,
+ typename BinaryFunction1, typename BinaryFunction2>
+ inline T
+ inner_product(InputIterator1 first1, InputIterator1 last1,
+ InputIterator2 first2, T init, BinaryFunction1 binary_op1,
+ BinaryFunction2 binary_op2,
+ __gnu_parallel::parallelism parallelism_tag)
+ {
+ typedef iterator_traits<InputIterator1> traits1_type;
+ typedef typename traits1_type::iterator_category iterator1_category;
+
+ typedef iterator_traits<InputIterator2> traits2_type;
+ typedef typename traits2_type::iterator_category iterator2_category;
+
+ return inner_product_switch(first1, last1, first2, init, binary_op1,
+ binary_op2, iterator1_category(),
+ iterator2_category(), parallelism_tag);
+ }
+
+ template<typename InputIterator1, typename InputIterator2, typename T,
+ typename BinaryFunction1, typename BinaryFunction2>
+ inline T
+ inner_product(InputIterator1 first1, InputIterator1 last1,
+ InputIterator2 first2, T init, BinaryFunction1 binary_op1,
+ BinaryFunction2 binary_op2)
+ {
+ typedef iterator_traits<InputIterator1> traits1_type;
+ typedef typename traits1_type::iterator_category iterator1_category;
+
+ typedef iterator_traits<InputIterator2> traits2_type;
+ typedef typename traits2_type::iterator_category iterator2_category;
+
+ return inner_product_switch(first1, last1, first2, init, binary_op1,
+ binary_op2, iterator1_category(),
+ iterator2_category());
+ }
template<typename InputIterator1, typename InputIterator2, typename T>
- inline T
- inner_product(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, T init,
- __gnu_parallel::parallelism parallelism_tag)
- {
- typedef iterator_traits<InputIterator1> traits_type1;
- typedef typename traits_type1::value_type value_type1;
- typedef iterator_traits<InputIterator2> traits_type2;
- typedef typename traits_type2::value_type value_type2;
-
- typedef typename __gnu_parallel::multiplies<value_type1, value_type2>::result
+ inline T
+ inner_product(InputIterator1 first1, InputIterator1 last1,
+ InputIterator2 first2, T init,
+ __gnu_parallel::parallelism parallelism_tag)
+ {
+ typedef iterator_traits<InputIterator1> traits_type1;
+ typedef typename traits_type1::value_type value_type1;
+ typedef iterator_traits<InputIterator2> traits_type2;
+ typedef typename traits_type2::value_type value_type2;
+
+ typedef typename
+ __gnu_parallel::multiplies<value_type1, value_type2>::result
multiplies_result_type;
- return inner_product(first1, last1, first2, init,
+ return inner_product(first1, last1, first2, init,
__gnu_parallel::plus<T, multiplies_result_type>(),
- __gnu_parallel::multiplies<value_type1, value_type2>(),
+ __gnu_parallel::
+ multiplies<value_type1, value_type2>(),
parallelism_tag);
- }
+ }
template<typename InputIterator1, typename InputIterator2, typename T>
- inline T
- inner_product(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, T init)
- {
- typedef iterator_traits<InputIterator1> traits_type1;
- typedef typename traits_type1::value_type value_type1;
- typedef iterator_traits<InputIterator2> traits_type2;
- typedef typename traits_type2::value_type value_type2;
-
- typedef typename __gnu_parallel::multiplies<value_type1, value_type2>::result
+ inline T
+ inner_product(InputIterator1 first1, InputIterator1 last1,
+ InputIterator2 first2, T init)
+ {
+ typedef iterator_traits<InputIterator1> traits_type1;
+ typedef typename traits_type1::value_type value_type1;
+ typedef iterator_traits<InputIterator2> traits_type2;
+ typedef typename traits_type2::value_type value_type2;
+
+ typedef typename
+ __gnu_parallel::multiplies<value_type1, value_type2>::result
multiplies_result_type;
- return inner_product(first1, last1, first2, init,
+ return inner_product(first1, last1, first2, init,
__gnu_parallel::plus<T, multiplies_result_type>(),
- __gnu_parallel::multiplies<value_type1, value_type2>());
- }
+ __gnu_parallel::
+ multiplies<value_type1, value_type2>());
+ }
// Sequential fallback.
template<typename InputIterator, typename OutputIterator>
- inline OutputIterator
- partial_sum(InputIterator begin, InputIterator end, OutputIterator result,
- __gnu_parallel::sequential_tag)
- { return _GLIBCXX_STD_P::partial_sum(begin, end, result); }
+ inline OutputIterator
+ partial_sum(InputIterator begin, InputIterator end, OutputIterator result,
+ __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::partial_sum(begin, end, result); }
// Sequential fallback.
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation>
- inline OutputIterator
- partial_sum(InputIterator begin, InputIterator end, OutputIterator result,
- BinaryOperation bin_op, __gnu_parallel::sequential_tag)
- { return _GLIBCXX_STD_P::partial_sum(begin, end, result, bin_op); }
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation>
+ inline OutputIterator
+ partial_sum(InputIterator begin, InputIterator end, OutputIterator result,
+ BinaryOperation bin_op, __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::partial_sum(begin, end, result, bin_op); }
// Sequential fallback for input iterator case.
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation, typename IteratorTag1, typename IteratorTag2>
- inline OutputIterator
- partial_sum_switch(InputIterator begin, InputIterator end, OutputIterator result, BinaryOperation bin_op, IteratorTag1, IteratorTag2)
- {
- return _GLIBCXX_STD_P::partial_sum(begin, end, result, bin_op);
- }
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation, typename IteratorTag1,
+ typename IteratorTag2>
+ inline OutputIterator
+ partial_sum_switch(InputIterator begin, InputIterator end,
+ OutputIterator result, BinaryOperation bin_op,
+ IteratorTag1, IteratorTag2)
+ { return _GLIBCXX_STD_P::partial_sum(begin, end, result, bin_op); }
// Parallel algorithm for random access iterators.
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation>
- OutputIterator
- partial_sum_switch(InputIterator begin, InputIterator end,
- OutputIterator result, BinaryOperation bin_op,
- random_access_iterator_tag, random_access_iterator_tag)
- {
- if (_GLIBCXX_PARALLEL_CONDITION(static_cast<__gnu_parallel::sequence_index_t>(end - begin) >= __gnu_parallel::Settings::partial_sum_minimal_n))
- return __gnu_parallel::parallel_partial_sum(begin, end, result, bin_op);
- else
- return partial_sum(begin, end, result, bin_op, __gnu_parallel::sequential_tag());
- }
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation>
+ OutputIterator
+ partial_sum_switch(InputIterator begin, InputIterator end,
+ OutputIterator result, BinaryOperation bin_op,
+ random_access_iterator_tag, random_access_iterator_tag)
+ {
+ if (_GLIBCXX_PARALLEL_CONDITION(static_cast<__gnu_parallel::
+ sequence_index_t>(end - begin)
+ >= __gnu_parallel::Settings::
+ partial_sum_minimal_n))
+ return __gnu_parallel::parallel_partial_sum(begin, end,
+ result, bin_op);
+ else
+ return partial_sum(begin, end, result, bin_op,
+ __gnu_parallel::sequential_tag());
+ }
// Public interface.
template<typename InputIterator, typename OutputIterator>
- inline OutputIterator
- partial_sum(InputIterator begin, InputIterator end, OutputIterator result)
- {
- typedef typename iterator_traits<InputIterator>::value_type value_type;
- return partial_sum(begin, end, result, std::plus<value_type>());
- }
+ inline OutputIterator
+ partial_sum(InputIterator begin, InputIterator end, OutputIterator result)
+ {
+ typedef typename iterator_traits<InputIterator>::value_type value_type;
+ return partial_sum(begin, end, result, std::plus<value_type>());
+ }
// Public interface
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation>
- inline OutputIterator
- partial_sum(InputIterator begin, InputIterator end, OutputIterator result,
- BinaryOperation binary_op)
- {
- typedef iterator_traits<InputIterator> traitsi_type;
- typedef typename traitsi_type::iterator_category iteratori_category;
-
- typedef iterator_traits<OutputIterator> traitso_type;
- typedef typename traitso_type::iterator_category iteratoro_category;
-
- return partial_sum_switch(begin, end, result, binary_op,
- iteratori_category(), iteratoro_category());
- }
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation>
+ inline OutputIterator
+ partial_sum(InputIterator begin, InputIterator end, OutputIterator result,
+ BinaryOperation binary_op)
+ {
+ typedef iterator_traits<InputIterator> traitsi_type;
+ typedef typename traitsi_type::iterator_category iteratori_category;
+
+ typedef iterator_traits<OutputIterator> traitso_type;
+ typedef typename traitso_type::iterator_category iteratoro_category;
+
+ return partial_sum_switch(begin, end, result, binary_op,
+ iteratori_category(), iteratoro_category());
+ }
// Sequential fallback.
template<typename InputIterator, typename OutputIterator>
- inline OutputIterator
- adjacent_difference(InputIterator begin, InputIterator end,
- OutputIterator result, __gnu_parallel::sequential_tag)
- { return _GLIBCXX_STD_P::adjacent_difference(begin, end, result); }
+ inline OutputIterator
+ adjacent_difference(InputIterator begin, InputIterator end,
+ OutputIterator result, __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::adjacent_difference(begin, end, result); }
// Sequential fallback.
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation>
- inline OutputIterator
- adjacent_difference(InputIterator begin, InputIterator end,
- OutputIterator result, BinaryOperation bin_op,
- __gnu_parallel::sequential_tag)
- {
- return _GLIBCXX_STD_P::adjacent_difference(begin, end, result, bin_op);
- }
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation>
+ inline OutputIterator
+ adjacent_difference(InputIterator begin, InputIterator end,
+ OutputIterator result, BinaryOperation bin_op,
+ __gnu_parallel::sequential_tag)
+ { return _GLIBCXX_STD_P::adjacent_difference(begin, end, result, bin_op); }
// Sequential fallback for input iterator case.
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation, typename IteratorTag1, typename IteratorTag2>
- inline OutputIterator
- adjacent_difference_switch(InputIterator begin, InputIterator end,
- OutputIterator result, BinaryOperation bin_op,
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation, typename IteratorTag1,
+ typename IteratorTag2>
+ inline OutputIterator
+ adjacent_difference_switch(InputIterator begin, InputIterator end,
+ OutputIterator result, BinaryOperation bin_op,
IteratorTag1, IteratorTag2)
- {
- return adjacent_difference(begin, end, result, bin_op,
- __gnu_parallel::sequential_tag());
- }
+ { return adjacent_difference(begin, end, result, bin_op,
+ __gnu_parallel::sequential_tag()); }
// Parallel algorithm for random access iterators.
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation>
- OutputIterator
- adjacent_difference_switch(InputIterator begin, InputIterator end,
- OutputIterator result, BinaryOperation bin_op,
- random_access_iterator_tag,
- random_access_iterator_tag,
- __gnu_parallel::parallelism parallelism_tag
- = __gnu_parallel::parallel_balanced)
- {
- if (_GLIBCXX_PARALLEL_CONDITION(static_cast<__gnu_parallel::sequence_index_t>(end - begin) >= __gnu_parallel::Settings::adjacent_difference_minimal_n && __gnu_parallel::is_parallel(parallelism_tag)))
- {
- bool dummy = true;
- typedef __gnu_parallel::iterator_pair<InputIterator, OutputIterator, random_access_iterator_tag> ip;
- *result = *begin;
- ip begin_pair(begin + 1, result + 1), end_pair(end, result + (end - begin));
- __gnu_parallel::adjacent_difference_selector<ip> functionality;
- __gnu_parallel::for_each_template_random_access(begin_pair, end_pair, bin_op, functionality, __gnu_parallel::dummy_reduct(), dummy, dummy, -1, parallelism_tag);
- return functionality.finish_iterator;
- }
- else
- return adjacent_difference(begin, end, result, bin_op,
- __gnu_parallel::sequential_tag());
- }
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation>
+ OutputIterator
+ adjacent_difference_switch(InputIterator begin, InputIterator end,
+ OutputIterator result, BinaryOperation bin_op,
+ random_access_iterator_tag,
+ random_access_iterator_tag,
+ __gnu_parallel::parallelism parallelism_tag
+ = __gnu_parallel::parallel_balanced)
+ {
+ if (_GLIBCXX_PARALLEL_CONDITION(
+ static_cast<__gnu_parallel::sequence_index_t>(end - begin)
+ >= __gnu_parallel::Settings::adjacent_difference_minimal_n
+ && __gnu_parallel::is_parallel(parallelism_tag)))
+ {
+ bool dummy = true;
+ typedef __gnu_parallel::iterator_pair<InputIterator, OutputIterator,
+ random_access_iterator_tag> ip;
+ *result = *begin;
+ ip begin_pair(begin + 1, result + 1),
+ end_pair(end, result + (end - begin));
+ __gnu_parallel::adjacent_difference_selector<ip> functionality;
+ __gnu_parallel::
+ for_each_template_random_access(begin_pair, end_pair, bin_op,
+ functionality,
+ __gnu_parallel::dummy_reduct(),
+ dummy, dummy, -1, parallelism_tag);
+ return functionality.finish_iterator;
+ }
+ else
+ return adjacent_difference(begin, end, result, bin_op,
+ __gnu_parallel::sequential_tag());
+ }
// Public interface.
template<typename InputIterator, typename OutputIterator>
- inline OutputIterator
- adjacent_difference(InputIterator begin, InputIterator end,
- OutputIterator result,
- __gnu_parallel::parallelism parallelism_tag)
- {
- typedef iterator_traits<InputIterator> traits_type;
- typedef typename traits_type::value_type value_type;
- return adjacent_difference(begin, end, result, std::minus<value_type>(),
- parallelism_tag);
- }
+ inline OutputIterator
+ adjacent_difference(InputIterator begin, InputIterator end,
+ OutputIterator result,
+ __gnu_parallel::parallelism parallelism_tag)
+ {
+ typedef iterator_traits<InputIterator> traits_type;
+ typedef typename traits_type::value_type value_type;
+ return adjacent_difference(begin, end, result, std::minus<value_type>(),
+ parallelism_tag);
+ }
template<typename InputIterator, typename OutputIterator>
- inline OutputIterator
- adjacent_difference(InputIterator begin, InputIterator end,
- OutputIterator result)
- {
- typedef iterator_traits<InputIterator> traits_type;
- typedef typename traits_type::value_type value_type;
- return adjacent_difference(begin, end, result, std::minus<value_type>());
- }
-
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation>
- inline OutputIterator
- adjacent_difference(InputIterator begin, InputIterator end,
- OutputIterator result, BinaryOperation binary_op,
- __gnu_parallel::parallelism parallelism_tag)
- {
- typedef iterator_traits<InputIterator> traitsi_type;
- typedef typename traitsi_type::iterator_category iteratori_category;
-
- typedef iterator_traits<OutputIterator> traitso_type;
- typedef typename traitso_type::iterator_category iteratoro_category;
-
- return adjacent_difference_switch(begin, end, result, binary_op,
- iteratori_category(),
- iteratoro_category(), parallelism_tag);
- }
-
- template<typename InputIterator, typename OutputIterator, typename BinaryOperation>
- inline OutputIterator
- adjacent_difference(InputIterator begin, InputIterator end,
- OutputIterator result, BinaryOperation binary_op)
- {
- typedef iterator_traits<InputIterator> traitsi_type;
- typedef typename traitsi_type::iterator_category iteratori_category;
-
- typedef iterator_traits<OutputIterator> traitso_type;
- typedef typename traitso_type::iterator_category iteratoro_category;
-
- return adjacent_difference_switch(begin, end, result, binary_op,
- iteratori_category(),
- iteratoro_category());
- }
+ inline OutputIterator
+ adjacent_difference(InputIterator begin, InputIterator end,
+ OutputIterator result)
+ {
+ typedef iterator_traits<InputIterator> traits_type;
+ typedef typename traits_type::value_type value_type;
+ return adjacent_difference(begin, end, result, std::minus<value_type>());
+ }
+
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation>
+ inline OutputIterator
+ adjacent_difference(InputIterator begin, InputIterator end,
+ OutputIterator result, BinaryOperation binary_op,
+ __gnu_parallel::parallelism parallelism_tag)
+ {
+ typedef iterator_traits<InputIterator> traitsi_type;
+ typedef typename traitsi_type::iterator_category iteratori_category;
+
+ typedef iterator_traits<OutputIterator> traitso_type;
+ typedef typename traitso_type::iterator_category iteratoro_category;
+
+ return adjacent_difference_switch(begin, end, result, binary_op,
+ iteratori_category(),
+ iteratoro_category(), parallelism_tag);
+ }
+
+ template<typename InputIterator, typename OutputIterator,
+ typename BinaryOperation>
+ inline OutputIterator
+ adjacent_difference(InputIterator begin, InputIterator end,
+ OutputIterator result, BinaryOperation binary_op)
+ {
+ typedef iterator_traits<InputIterator> traitsi_type;
+ typedef typename traitsi_type::iterator_category iteratori_category;
+
+ typedef iterator_traits<OutputIterator> traitso_type;
+ typedef typename traitso_type::iterator_category iteratoro_category;
+
+ return adjacent_difference_switch(begin, end, result, binary_op,
+ iteratori_category(),
+ iteratoro_category());
+ }
} // end namespace
} // end namespace
projects / thirdparty / gcc.git / blobdiff