hpx::ranges::includes#

Defined in header hpx/algorithm.hpp.

See Public API for a list of names and headers that are part of the public HPX API.

namespace hpx
namespace ranges

Functions

template<typename ExPolicy, typename Iter1, typename Sent1, typename Iter2, typename Sent2, typename Pred = hpx::parallel::detail::less, typename Proj1 = hpx::identity, typename Proj2 = hpx::identity>
hpx::parallel::util::detail::algorithm_result_t<ExPolicy, bool> includes(ExPolicy &&policy, Iter1 first1, Sent1 last1, Iter2 first2, Sent2 last2, Pred &&op = Pred(), Proj1 &&proj1 = Proj1(), Proj2 &&proj2 = Proj2())#

Returns true if every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty. The version expects both ranges to be sorted with the user supplied binary predicate f.

The comparison operations in the parallel includes algorithm invoked with an execution policy object of type sequenced_policy execute in sequential order in the calling thread.

The comparison operations in the parallel includes algorithm invoked with an execution policy object of type parallel_policy or parallel_task_policy are permitted to execute in an unordered fashion in unspecified threads, and indeterminately sequenced within each thread.

Note

At most 2*(N1+N2-1) comparisons, where N1 = std::distance(first1, last1) and N2 = std::distance(first2, last2).

Template Parameters

  • ExPolicy – The type of the execution policy to use (deduced). It describes the manner in which the execution of the algorithm may be parallelized and the manner in which it executes the assignments.

  • Iter1 – The type of the source iterators used (deduced) representing the first sequence. This iterator type must meet the requirements of an forward iterator.

  • Sent1 – The type of the end source iterators used (deduced). This iterator type must meet the requirements of an sentinel for Iter1.

  • Iter2 – The type of the source iterators used (deduced) representing the second sequence. This iterator type must meet the requirements of an forward iterator.

  • Sent2 – The type of the end source iterators used (deduced) representing the second sequence. This iterator type must meet the requirements of an sentinel for Iter2.

  • Pred – The type of an optional function/function object to use. Unlike its sequential form, the parallel overload of includes requires Pred to meet the requirements of CopyConstructible. This defaults to std::less<>

  • Proj1 – The type of an optional projection function applied to the first sequence. This defaults to hpx::identity

  • Proj2 – The type of an optional projection function applied to the second sequence. This defaults to hpx::identity

Parameters

  • policy – The execution policy to use for the scheduling of the iterations.

  • first1 – Refers to the beginning of the sequence of elements of the first range the algorithm will be applied to.

  • last1 – Refers to the end of the sequence of elements of the first range the algorithm will be applied to.

  • first2 – Refers to the beginning of the sequence of elements of the second range the algorithm will be applied to.

  • last2 – Refers to the end of the sequence of elements of the second range the algorithm will be applied to.

  • op – The binary predicate which returns true if the elements should be treated as includes. The signature of the predicate function should be equivalent to the following: 

    bool pred(const Type1 &a, const Type2 &b);
    The signature does not need to have const &, but the function must not modify the objects passed to it. The types Type1 and Type2 must be such that objects of types FwdIter1 and FwdIter2 can be dereferenced and then implicitly converted to Type1 and Type2 respectively

  • proj1 – Specifies the function (or function object) which will be invoked for each of the elements of the first sequence as a projection operation before the actual predicate op is invoked.

  • proj2 – Specifies the function (or function object) which will be invoked for each of the elements of the second sequence as a projection operation before the actual predicate op is invoked.

Returns

The includes algorithm returns a hpx::future<bool> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns bool otherwise. The includes algorithm returns true every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty.

template<typename Iter1, typename Sent1, typename Iter2, typename Sent2, typename Pred = hpx::parallel::detail::less, typename Proj1 = hpx::identity, typename Proj2 = hpx::identity>
bool includes(Iter1 first1, Sent1 last1, Iter2 first2, Sent2 last2, Pred &&op = Pred(), Proj1 &&proj1 = Proj1(), Proj2 &&proj2 = Proj2())#

Returns true if every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty. The version expects both ranges to be sorted with the user supplied binary predicate f.

Note

At most 2*(N1+N2-1) comparisons, where N1 = std::distance(first1, last1) and N2 = std::distance(first2, last2).

Template Parameters

  • Iter1 – The type of the source iterators used (deduced) representing the first sequence. This iterator type must meet the requirements of an forward iterator.

  • Sent1 – The type of the end source iterators used (deduced). This iterator type must meet the requirements of an sentinel for Iter1.

  • Iter2 – The type of the source iterators used (deduced) representing the second sequence. This iterator type must meet the requirements of an forward iterator.

  • Sent2 – The type of the end source iterators used (deduced) representing the second sequence. This iterator type must meet the requirements of an sentinel for Iter2.

  • Pred – The type of an optional function/function object to use. Unlike its sequential form, the parallel overload of includes requires Pred to meet the requirements of CopyConstructible. This defaults to std::less<>

  • Proj1 – The type of an optional projection function applied to the first sequence. This defaults to hpx::identity

  • Proj2 – The type of an optional projection function applied to the second sequence. This defaults to hpx::identity

Parameters

  • first1 – Refers to the beginning of the sequence of elements of the first range the algorithm will be applied to.

  • last1 – Refers to the end of the sequence of elements of the first range the algorithm will be applied to.

  • first2 – Refers to the beginning of the sequence of elements of the second range the algorithm will be applied to.

  • last2 – Refers to the end of the sequence of elements of the second range the algorithm will be applied to.

  • op – The binary predicate which returns true if the elements should be treated as includes. The signature of the predicate function should be equivalent to the following: 

    bool pred(const Type1 &a, const Type2 &b);
    The signature does not need to have const &, but the function must not modify the objects passed to it. The types Type1 and Type2 must be such that objects of types FwdIter1 and FwdIter2 can be dereferenced and then implicitly converted to Type1 and Type2 respectively

  • proj1 – Specifies the function (or function object) which will be invoked for each of the elements of the first sequence as a projection operation before the actual predicate op is invoked.

  • proj2 – Specifies the function (or function object) which will be invoked for each of the elements of the second sequence as a projection operation before the actual predicate op is invoked.

Returns

The includes algorithm returns true every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty.

template<typename ExPolicy, typename Rng1, typename Rng2, typename Pred = hpx::parallel::detail::less, typename Proj1 = hpx::identity, typename Proj2 = hpx::identity>
hpx::parallel::util::detail::algorithm_result_t<ExPolicy, bool> includes(ExPolicy &&policy, Rng1 &&rng1, Rng2 &&rng2, Pred &&op = Pred(), Proj1 &&proj1 = Proj1(), Proj2 &&proj2 = Proj2())#

Returns true if every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty. The version expects both ranges to be sorted with the user supplied binary predicate f.

The comparison operations in the parallel includes algorithm invoked with an execution policy object of type sequenced_policy execute in sequential order in the calling thread.

The comparison operations in the parallel includes algorithm invoked with an execution policy object of type parallel_policy or parallel_task_policy are permitted to execute in an unordered fashion in unspecified threads, and indeterminately sequenced within each thread.

Note

At most 2*(N1+N2-1) comparisons, where N1 = std::distance(first1, last1) and N2 = std::distance(first2, last2).

Template Parameters

  • ExPolicy – The type of the execution policy to use (deduced). It describes the manner in which the execution of the algorithm may be parallelized and the manner in which it executes the assignments.

  • Rng1 – The type of the source range used (deduced). The iterators extracted from this range type must meet the requirements of an input iterator.

  • Rng2 – The type of the source range used (deduced). The iterators extracted from this range type must meet the requirements of an input iterator.

  • Pred – The type of an optional function/function object to use. Unlike its sequential form, the parallel overload of includes requires Pred to meet the requirements of CopyConstructible. This defaults to std::less<>

  • Proj1 – The type of an optional projection function applied to the first sequence. This defaults to hpx::identity

  • Proj2 – The type of an optional projection function applied to the second sequence. This defaults to hpx::identity

Parameters

  • policy – The execution policy to use for the scheduling of the iterations.

  • rng1 – Refers to the first sequence of elements the algorithm will be applied to.

  • rng2 – Refers to the second sequence of elements the algorithm will be applied to.

  • op – The binary predicate which returns true if the elements should be treated as includes. The signature of the predicate function should be equivalent to the following: 

    bool pred(const Type1 &a, const Type2 &b);
    The signature does not need to have const &, but the function must not modify the objects passed to it. The types Type1 and Type2 must be such that objects of types FwdIter1 and FwdIter2 can be dereferenced and then implicitly converted to Type1 and Type2 respectively

  • proj1 – Specifies the function (or function object) which will be invoked for each of the elements of the first sequence as a projection operation before the actual predicate op is invoked.

  • proj2 – Specifies the function (or function object) which will be invoked for each of the elements of the second sequence as a projection operation before the actual predicate op is invoked.

Returns

The includes algorithm returns a hpx::future<bool> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns bool otherwise. The includes algorithm returns true every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty.

template<typename Rng1, typename Rng2, typename Pred = hpx::parallel::detail::less, typename Proj1 = hpx::identity, typename Proj2 = hpx::identity>
bool includes(Rng1 &&rng1, Rng2 &&rng2, Pred &&op = Pred(), Proj1 &&proj1 = Proj1(), Proj2 &&proj2 = Proj2())#

Returns true if every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty. The version expects both ranges to be sorted with the user supplied binary predicate f.

Note

At most 2*(N1+N2-1) comparisons, where N1 = std::distance(first1, last1) and N2 = std::distance(first2, last2).

Template Parameters

  • Rng1 – The type of the source range used (deduced). The iterators extracted from this range type must meet the requirements of an input iterator.

  • Rng2 – The type of the source range used (deduced). The iterators extracted from this range type must meet the requirements of an input iterator.

  • Pred – The type of an optional function/function object to use. Unlike its sequential form, the parallel overload of includes requires Pred to meet the requirements of CopyConstructible. This defaults to std::less<>

  • Proj1 – The type of an optional projection function applied to the first sequence. This defaults to hpx::identity

  • Proj2 – The type of an optional projection function applied to the second sequence. This defaults to hpx::identity

Parameters

  • rng1 – Refers to the first sequence of elements the algorithm will be applied to.

  • rng2 – Refers to the second sequence of elements the algorithm will be applied to.

  • op – The binary predicate which returns true if the elements should be treated as includes. The signature of the predicate function should be equivalent to the following: 

    bool pred(const Type1 &a, const Type2 &b);
    The signature does not need to have const &, but the function must not modify the objects passed to it. The types Type1 and Type2 must be such that objects of types FwdIter1 and FwdIter2 can be dereferenced and then implicitly converted to Type1 and Type2 respectively

  • proj1 – Specifies the function (or function object) which will be invoked for each of the elements of the first sequence as a projection operation before the actual predicate op is invoked.

  • proj2 – Specifies the function (or function object) which will be invoked for each of the elements of the second sequence as a projection operation before the actual predicate op is invoked.

Returns

The includes algorithm returns true every element from the sorted range [first2, last2) is found within the sorted range [first1, last1). Also returns true if [first2, last2) is empty.