hpx::fill, hpx::fill_n#

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

Functions

template<typename ExPolicy, typename FwdIter, typename T>
util::detail::algorithm_result_t<ExPolicy> fill(ExPolicy &&policy, FwdIter first, FwdIter last, T value)#

Assigns the given value to the elements in the range [first, last). Executed according to the policy.

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

The comparisons in the parallel fill 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

Complexity: Performs exactly last - first assignments.

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.

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

  • T – The type of the value to be assigned (deduced).

Parameters

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

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

  • last – Refers to the end of the sequence of elements the algorithm will be applied to.

  • value – The value to be assigned.

Returns

The fill algorithm returns a hpx::future<void> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns difference_type otherwise (where difference_type is defined by void.

template<typename FwdIter, typename T>
void fill(FwdIter first, FwdIter last, T value)#

Assigns the given value to the elements in the range [first, last).

Note

Complexity: Performs exactly last - first assignments.

Template Parameters

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

  • T – The type of the value to be assigned (deduced).

Parameters

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

  • last – Refers to the end of the sequence of elements the algorithm will be applied to.

  • value – The value to be assigned.

Returns

The fill algorithm returns a void.

template<typename ExPolicy, typename FwdIter, typename Size, typename T>
util::detail::algorithm_result_t<ExPolicy, FwdIter> fill_n(ExPolicy &&policy, FwdIter first, Size count, T value)#

Assigns the given value value to the first count elements in the range beginning at first if count > 0. Does nothing otherwise. Executed according to the policy.

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

The comparisons in the parallel fill_n 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

Complexity: Performs exactly count assignments, for count > 0.

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.

  • FwdIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of a forward iterator.

  • Size – The type of the argument specifying the number of elements to apply f to.

  • T – The type of the value to be assigned (deduced).

Parameters

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

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

  • count – Refers to the number of elements starting at first the algorithm will be applied to.

  • value – The value to be assigned.

Returns

The fill_n algorithm returns a hpx::future<void> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns difference_type otherwise (where difference_type is defined by void.

template<typename FwdIter, typename Size, typename T>
FwdIter fill_n(FwdIter first, Size count, T value)#

Assigns the given value value to the first count elements in the range beginning at first if count > 0. Does nothing otherwise.

Note

Complexity: Performs exactly count assignments, for count > 0.

Template Parameters

  • FwdIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of a forward iterator.

  • Size – The type of the argument specifying the number of elements to apply f to.

  • T – The type of the value to be assigned (deduced).

Parameters

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

  • count – Refers to the number of elements starting at first the algorithm will be applied to.

  • value – The value to be assigned.

Returns

The fill_n algorithm returns a FwdIter.