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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.
*/
/*! \file binary_search.h
* \brief Search for values in sorted ranges.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/detail/dispatchable.h>
#include <thrust/pair.h>
namespace thrust
{
template<typename System, typename ForwardIterator, typename LessThanComparable>
ForwardIterator lower_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const LessThanComparable &value);
template<typename System, typename ForwardIterator, typename T, typename StrictWeakOrdering>
ForwardIterator lower_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const T &value,
StrictWeakOrdering comp);
template<typename System, typename ForwardIterator, typename LessThanComparable>
ForwardIterator upper_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const LessThanComparable &value);
template<typename System, typename ForwardIterator, typename T, typename StrictWeakOrdering>
ForwardIterator upper_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const T &value,
StrictWeakOrdering comp);
template <typename System, typename ForwardIterator, typename LessThanComparable>
bool binary_search(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const LessThanComparable& value);
template <typename System, typename ForwardIterator, typename T, typename StrictWeakOrdering>
bool binary_search(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const T& value,
StrictWeakOrdering comp);
template <typename System, typename ForwardIterator, typename T, typename StrictWeakOrdering>
thrust::pair<ForwardIterator, ForwardIterator>
equal_range(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const T& value,
StrictWeakOrdering comp);
template <typename System, typename ForwardIterator, typename LessThanComparable>
thrust::pair<ForwardIterator, ForwardIterator>
equal_range(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
const LessThanComparable& value);
template <typename System, typename ForwardIterator, typename InputIterator, typename OutputIterator>
OutputIterator lower_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output);
template <typename System, typename ForwardIterator, typename InputIterator, typename OutputIterator, typename StrictWeakOrdering>
OutputIterator lower_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output,
StrictWeakOrdering comp);
template <typename System, typename ForwardIterator, typename InputIterator, typename OutputIterator>
OutputIterator upper_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output);
template <typename System, typename ForwardIterator, typename InputIterator, typename OutputIterator, typename StrictWeakOrdering>
OutputIterator upper_bound(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output,
StrictWeakOrdering comp);
template <typename System, typename ForwardIterator, typename InputIterator, typename OutputIterator>
OutputIterator binary_search(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output);
template <typename System, typename ForwardIterator, typename InputIterator, typename OutputIterator, typename StrictWeakOrdering>
OutputIterator binary_search(thrust::detail::dispatchable_base<System> &system,
ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output,
StrictWeakOrdering comp);
/*! \addtogroup algorithms
*/
/*! \addtogroup searching
* \ingroup algorithms
* \{
*/
/*! \addtogroup binary_search Binary Search
* \ingroup searching
* \{
*/
//////////////////////
// Scalar Functions //
//////////////////////
/*! \p lower_bound is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the first position where value could be
* inserted without violating the ordering. This version of
* \p lower_bound uses <tt>operator<</tt> for comparison and returns
* the furthermost iterator \c i in <tt>[first, last)</tt> such that,
* for every iterator \c j in <tt>[first, i)</tt>, <tt>*j < value</tt>.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \return The furthermost iterator \c i, such that <tt>*i < value</tt>.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam LessThanComparable is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
*
* The following code snippet demonstrates how to use \p lower_bound
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::lower_bound(input.begin(), input.end(), 0); // returns input.begin()
* thrust::lower_bound(input.begin(), input.end(), 1); // returns input.begin() + 1
* thrust::lower_bound(input.begin(), input.end(), 2); // returns input.begin() + 1
* thrust::lower_bound(input.begin(), input.end(), 3); // returns input.begin() + 2
* thrust::lower_bound(input.begin(), input.end(), 8); // returns input.begin() + 4
* thrust::lower_bound(input.begin(), input.end(), 9); // returns input.end()
* \endcode
*
* \see http://www.sgi.com/tech/stl/lower_bound.html
* \see \p upper_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class LessThanComparable>
ForwardIterator lower_bound(ForwardIterator first,
ForwardIterator last,
const LessThanComparable& value);
/*! \p lower_bound is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the first position where value could be
* inserted without violating the ordering. This version of
* \p lower_bound uses function object \c comp for comparison
* and returns the furthermost iterator \c i in <tt>[first, last)</tt>
* such that, for every iterator \c j in <tt>[first, i)</tt>,
* <tt>comp(*j, value)</tt> is \c true.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \param comp The comparison operator.
* \return The furthermost iterator \c i, such that <tt>comp(*i, value)</tt> is \c true.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam T is comparable to \p ForwardIterator's \c value_type.
* \tparam StrictWeakOrdering is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>.
*
* The following code snippet demonstrates how to use \p lower_bound
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* #include <thrust/functional.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::lower_bound(input.begin(), input.end(), 0, thrust::less<int>()); // returns input.begin()
* thrust::lower_bound(input.begin(), input.end(), 1, thrust::less<int>()); // returns input.begin() + 1
* thrust::lower_bound(input.begin(), input.end(), 2, thrust::less<int>()); // returns input.begin() + 1
* thrust::lower_bound(input.begin(), input.end(), 3, thrust::less<int>()); // returns input.begin() + 2
* thrust::lower_bound(input.begin(), input.end(), 8, thrust::less<int>()); // returns input.begin() + 4
* thrust::lower_bound(input.begin(), input.end(), 9, thrust::less<int>()); // returns input.end()
* \endcode
*
* \see http://www.sgi.com/tech/stl/lower_bound.html
* \see \p upper_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class T, class StrictWeakOrdering>
ForwardIterator lower_bound(ForwardIterator first,
ForwardIterator last,
const T& value,
StrictWeakOrdering comp);
/*! \p upper_bound is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the last position where value could be
* inserted without violating the ordering. This version of
* \p upper_bound uses <tt>operator<</tt> for comparison and returns
* the furthermost iterator \c i in <tt>[first, last)</tt> such that,
* for every iterator \c j in <tt>[first, i)</tt>, <tt>value < *j</tt>
* is \c false.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \return The furthermost iterator \c i, such that <tt>value < *i</tt> is \c false.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam LessThanComparable is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
*
* The following code snippet demonstrates how to use \p upper_bound
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::upper_bound(input.begin(), input.end(), 0); // returns input.begin() + 1
* thrust::upper_bound(input.begin(), input.end(), 1); // returns input.begin() + 1
* thrust::upper_bound(input.begin(), input.end(), 2); // returns input.begin() + 2
* thrust::upper_bound(input.begin(), input.end(), 3); // returns input.begin() + 2
* thrust::upper_bound(input.begin(), input.end(), 8); // returns input.end()
* thrust::upper_bound(input.begin(), input.end(), 9); // returns input.end()
* \endcode
*
* \see http://www.sgi.com/tech/stl/upper_bound.html
* \see \p lower_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class LessThanComparable>
ForwardIterator upper_bound(ForwardIterator first,
ForwardIterator last,
const LessThanComparable& value);
/*! \p upper_bound is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the last position where value could be
* inserted without violating the ordering. This version of
* \p upper_bound uses function object \c comp for comparison and returns
* the furthermost iterator \c i in <tt>[first, last)</tt> such that,
* for every iterator \c j in <tt>[first, i)</tt>, <tt>comp(value, *j)</tt>
* is \c false.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \param comp The comparison operator.
* \return The furthermost iterator \c i, such that <tt>comp(value, *i)</tt> is \c false.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam T is comparable to \p ForwardIterator's \c value_type.
* \tparam StrictWeakOrdering is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>.
*
* The following code snippet demonstrates how to use \p upper_bound
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* #include <thrust/functional.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::upper_bound(input.begin(), input.end(), 0, thrust::less<int>()); // returns input.begin() + 1
* thrust::upper_bound(input.begin(), input.end(), 1, thrust::less<int>()); // returns input.begin() + 1
* thrust::upper_bound(input.begin(), input.end(), 2, thrust::less<int>()); // returns input.begin() + 2
* thrust::upper_bound(input.begin(), input.end(), 3, thrust::less<int>()); // returns input.begin() + 2
* thrust::upper_bound(input.begin(), input.end(), 8, thrust::less<int>()); // returns input.end()
* thrust::upper_bound(input.begin(), input.end(), 9, thrust::less<int>()); // returns input.end()
* \endcode
*
* \see http://www.sgi.com/tech/stl/upper_bound.html
* \see \p lower_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class T, class StrictWeakOrdering>
ForwardIterator upper_bound(ForwardIterator first,
ForwardIterator last,
const T& value,
StrictWeakOrdering comp);
/*! \p binary_search is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>.
* It returns \c true if an element that is equivalent to \c value
* is present in <tt>[first, last)</tt> and \c false if no such element
* exists. Specifically, this version returns \c true if and only if
* there exists an iterator \c i in <tt>[first, last)</tt> such that
* <tt>*i < value</tt> and <tt>value < *i</tt> are both \c false.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \return \c true if an equivalent element exists in <tt>[first, last)</tt>, otherwise \c false.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam LessThanComparable is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
*
* The following code snippet demonstrates how to use \p binary_search
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::binary_search(input.begin(), input.end(), 0); // returns true
* thrust::binary_search(input.begin(), input.end(), 1); // returns false
* thrust::binary_search(input.begin(), input.end(), 2); // returns true
* thrust::binary_search(input.begin(), input.end(), 3); // returns false
* thrust::binary_search(input.begin(), input.end(), 8); // returns true
* thrust::binary_search(input.begin(), input.end(), 9); // returns false
* \endcode
*
* \see http://www.sgi.com/tech/stl/binary_search.html
* \see \p lower_bound
* \see \p upper_bound
* \see \p equal_range
*/
template <class ForwardIterator, class LessThanComparable>
bool binary_search(ForwardIterator first,
ForwardIterator last,
const LessThanComparable& value);
/*! \p binary_search is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>.
* It returns \c true if an element that is equivalent to \c value
* is present in <tt>[first, last)</tt> and \c false if no such element
* exists. Specifically, this version returns \c true if and only if
* there exists an iterator \c i in <tt>[first, last)</tt> such that
* <tt>comp(*i, value)</tt> and <tt>comp(value, *i)</tt> are both \c false.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \param comp The comparison operator.
* \return \c true if an equivalent element exists in <tt>[first, last)</tt>, otherwise \c false.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam T is comparable to \p ForwardIterator's \c value_type.
* \tparam StrictWeakOrdering is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>.
*
* The following code snippet demonstrates how to use \p binary_search
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* #include <thrust/functional.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::binary_search(input.begin(), input.end(), 0, thrust::less<int>()); // returns true
* thrust::binary_search(input.begin(), input.end(), 1, thrust::less<int>()); // returns false
* thrust::binary_search(input.begin(), input.end(), 2, thrust::less<int>()); // returns true
* thrust::binary_search(input.begin(), input.end(), 3, thrust::less<int>()); // returns false
* thrust::binary_search(input.begin(), input.end(), 8, thrust::less<int>()); // returns true
* thrust::binary_search(input.begin(), input.end(), 9, thrust::less<int>()); // returns false
* \endcode
*
* \see http://www.sgi.com/tech/stl/binary_search.html
* \see \p lower_bound
* \see \p upper_bound
* \see \p equal_range
*/
template <class ForwardIterator, class T, class StrictWeakOrdering>
bool binary_search(ForwardIterator first,
ForwardIterator last,
const T& value,
StrictWeakOrdering comp);
/*! \p equal_range is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>. The
* value returned by \p equal_range is essentially a combination of
* the values returned by \p lower_bound and \p upper_bound: it returns
* a \p pair of iterators \c i and \c j such that \c i is the first
* position where value could be inserted without violating the
* ordering and \c j is the last position where value could be inserted
* without violating the ordering. It follows that every element in the
* range <tt>[i, j)</tt> is equivalent to value, and that
* <tt>[i, j)</tt> is the largest subrange of <tt>[first, last)</tt> that
* has this property.
*
* This version of \p equal_range returns a \p pair of iterators
* <tt>[i, j)</tt>, where \c i is the furthermost iterator in
* <tt>[first, last)</tt> such that, for every iterator \c k in
* <tt>[first, i)</tt>, <tt>*k < value</tt>. \c j is the furthermost
* iterator in <tt>[first, last)</tt> such that, for every iterator
* \c k in <tt>[first, j)</tt>, <tt>value < *k</tt> is \c false.
* For every iterator \c k in <tt>[i, j)</tt>, neither
* <tt>value < *k</tt> nor <tt>*k < value</tt> is \c true.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \return A \p pair of iterators <tt>[i, j)</tt> that define the range of equivalent elements.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam LessThanComparable is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
*
* The following code snippet demonstrates how to use \p equal_range
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::equal_range(input.begin(), input.end(), 0); // returns [input.begin(), input.begin() + 1)
* thrust::equal_range(input.begin(), input.end(), 1); // returns [input.begin() + 1, input.begin() + 1)
* thrust::equal_range(input.begin(), input.end(), 2); // returns [input.begin() + 1, input.begin() + 2)
* thrust::equal_range(input.begin(), input.end(), 3); // returns [input.begin() + 2, input.begin() + 2)
* thrust::equal_range(input.begin(), input.end(), 8); // returns [input.begin() + 4, input.end)
* thrust::equal_range(input.begin(), input.end(), 9); // returns [input.end(), input.end)
* \endcode
*
* \see http://www.sgi.com/tech/stl/equal_range.html
* \see \p lower_bound
* \see \p upper_bound
* \see \p binary_search
*/
template <class ForwardIterator, class LessThanComparable>
thrust::pair<ForwardIterator, ForwardIterator>
equal_range(ForwardIterator first,
ForwardIterator last,
const LessThanComparable& value);
/*! \p equal_range is a version of binary search: it attempts to find
* the element value in an ordered range <tt>[first, last)</tt>. The
* value returned by \p equal_range is essentially a combination of
* the values returned by \p lower_bound and \p upper_bound: it returns
* a \p pair of iterators \c i and \c j such that \c i is the first
* position where value could be inserted without violating the
* ordering and \c j is the last position where value could be inserted
* without violating the ordering. It follows that every element in the
* range <tt>[i, j)</tt> is equivalent to value, and that
* <tt>[i, j)</tt> is the largest subrange of <tt>[first, last)</tt> that
* has this property.
*
* This version of \p equal_range returns a \p pair of iterators
* <tt>[i, j)</tt>. \c i is the furthermost iterator in
* <tt>[first, last)</tt> such that, for every iterator \c k in
* <tt>[first, i)</tt>, <tt>comp(*k, value)</tt> is \c true.
* \c j is the furthermost iterator in <tt>[first, last)</tt> such
* that, for every iterator \c k in <tt>[first, last)</tt>,
* <tt>comp(value, *k)</tt> is \c false. For every iterator \c k
* in <tt>[i, j)</tt>, neither <tt>comp(value, *k)</tt> nor
* <tt>comp(*k, value)</tt> is \c true.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param value The value to be searched.
* \param comp The comparison operator.
* \return A \p pair of iterators <tt>[i, j)</tt> that define the range of equivalent elements.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam T is comparable to \p ForwardIterator's \c value_type.
* \tparam StrictWeakOrdering is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>.
*
* The following code snippet demonstrates how to use \p equal_range
* to search for values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* #include <thrust/functional.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::equal_range(input.begin(), input.end(), 0, thrust::less<int>()); // returns [input.begin(), input.begin() + 1)
* thrust::equal_range(input.begin(), input.end(), 1, thrust::less<int>()); // returns [input.begin() + 1, input.begin() + 1)
* thrust::equal_range(input.begin(), input.end(), 2, thrust::less<int>()); // returns [input.begin() + 1, input.begin() + 2)
* thrust::equal_range(input.begin(), input.end(), 3, thrust::less<int>()); // returns [input.begin() + 2, input.begin() + 2)
* thrust::equal_range(input.begin(), input.end(), 8, thrust::less<int>()); // returns [input.begin() + 4, input.end)
* thrust::equal_range(input.begin(), input.end(), 9, thrust::less<int>()); // returns [input.end(), input.end)
* \endcode
*
* \see http://www.sgi.com/tech/stl/equal_range.html
* \see \p lower_bound
* \see \p upper_bound
* \see \p binary_search
*/
template <class ForwardIterator, class T, class StrictWeakOrdering>
thrust::pair<ForwardIterator, ForwardIterator>
equal_range(ForwardIterator first,
ForwardIterator last,
const T& value,
StrictWeakOrdering comp);
/*! \addtogroup vectorized_binary_search Vectorized Searches
* \ingroup binary_search
* \{
*/
//////////////////////
// Vector Functions //
//////////////////////
/*! \p lower_bound is a vectorized version of binary search: for each
* iterator \c v in <tt>[values_first, values_last)</tt> it attempts to
* find the value <tt>*v</tt> in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the index of first position where value could
* be inserted without violating the ordering.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param values_first The beginning of the search values sequence.
* \param values_last The end of the search values sequence.
* \param output The beginning of the output sequence.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>.
* and \c InputIterator's \c value_type is <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
* and \c ForwardIterator's difference_type is convertible to \c OutputIterator's \c value_type.
*
* The following code snippet demonstrates how to use \p lower_bound
* to search for multiple values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::device_vector<int> values(6);
* values[0] = 0;
* values[1] = 1;
* values[2] = 2;
* values[3] = 3;
* values[4] = 8;
* values[5] = 9;
*
* thrust::device_vector<unsigned int> output(6);
*
* thrust::lower_bound(input.begin(), input.end(),
* values.begin(), values.end(),
* output.begin());
*
* // output is now [0, 1, 1, 2, 4, 5]
* \endcode
*
* \see http://www.sgi.com/tech/stl/lower_bound.html
* \see \p upper_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class InputIterator, class OutputIterator>
OutputIterator lower_bound(ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output);
/*! \p lower_bound is a vectorized version of binary search: for each
* iterator \c v in <tt>[values_first, values_last)</tt> it attempts to
* find the value <tt>*v</tt> in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the index of first position where value could
* be inserted without violating the ordering. This version of
* \p lower_bound uses function object \c comp for comparison.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param values_first The beginning of the search values sequence.
* \param values_last The end of the search values sequence.
* \param output The beginning of the output sequence.
* \param comp The comparison operator.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>.
* and \c InputIterator's \c value_type is comparable to \p ForwardIterator's \c value_type.
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
* and \c ForwardIterator's difference_type is convertible to \c OutputIterator's \c value_type.
* \tparam StrictWeakOrdering is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>.
*
* The following code snippet demonstrates how to use \p lower_bound
* to search for multiple values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* #include <thrust/functional.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::device_vector<int> values(6);
* values[0] = 0;
* values[1] = 1;
* values[2] = 2;
* values[3] = 3;
* values[4] = 8;
* values[5] = 9;
*
* thrust::device_vector<unsigned int> output(6);
*
* thrust::lower_bound(input.begin(), input.end(),
* values.begin(), values.end(),
* output.begin(),
* thrust::less<int>());
*
* // output is now [0, 1, 1, 2, 4, 5]
* \endcode
*
* \see http://www.sgi.com/tech/stl/lower_bound.html
* \see \p upper_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class InputIterator, class OutputIterator, class StrictWeakOrdering>
OutputIterator lower_bound(ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output,
StrictWeakOrdering comp);
/*! \p upper_bound is a vectorized version of binary search: for each
* iterator \c v in <tt>[values_first, values_last)</tt> it attempts to
* find the value <tt>*v</tt> in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the index of last position where value could
* be inserted without violating the ordering.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param values_first The beginning of the search values sequence.
* \param values_last The end of the search values sequence.
* \param output The beginning of the output sequence.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>.
* and \c InputIterator's \c value_type is <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
* and \c ForwardIterator's difference_type is convertible to \c OutputIterator's \c value_type.
*
* The following code snippet demonstrates how to use \p lower_bound
* to search for multiple values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::device_vector<int> values(6);
* values[0] = 0;
* values[1] = 1;
* values[2] = 2;
* values[3] = 3;
* values[4] = 8;
* values[5] = 9;
*
* thrust::device_vector<unsigned int> output(6);
*
* thrust::upper_bound(input.begin(), input.end(),
* values.begin(), values.end(),
* output.begin());
*
* // output is now [1, 1, 2, 2, 5, 5]
* \endcode
*
* \see http://www.sgi.com/tech/stl/upper_bound.html
* \see \p upper_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class InputIterator, class OutputIterator>
OutputIterator upper_bound(ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output);
/*! \p upper_bound is a vectorized version of binary search: for each
* iterator \c v in <tt>[values_first, values_last)</tt> it attempts to
* find the value <tt>*v</tt> in an ordered range <tt>[first, last)</tt>.
* Specifically, it returns the index of first position where value could
* be inserted without violating the ordering. This version of
* \p upper_bound uses function object \c comp for comparison.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param values_first The beginning of the search values sequence.
* \param values_last The end of the search values sequence.
* \param output The beginning of the output sequence.
* \param comp The comparison operator.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>.
* and \c InputIterator's \c value_type is comparable to \p ForwardIterator's \c value_type.
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
* and \c ForwardIterator's difference_type is convertible to \c OutputIterator's \c value_type.
* \tparam StrictWeakOrdering is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>.
*
* The following code snippet demonstrates how to use \p lower_bound
* to search for multiple values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* #include <thrust/functional.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::device_vector<int> values(6);
* values[0] = 0;
* values[1] = 1;
* values[2] = 2;
* values[3] = 3;
* values[4] = 8;
* values[5] = 9;
*
* thrust::device_vector<unsigned int> output(6);
*
* thrust::upper_bound(input.begin(), input.end(),
* values.begin(), values.end(),
* output.begin(),
* thrust::less<int>());
*
* // output is now [1, 1, 2, 2, 5, 5]
* \endcode
*
* \see http://www.sgi.com/tech/stl/upper_bound.html
* \see \p lower_bound
* \see \p equal_range
* \see \p binary_search
*/
template <class ForwardIterator, class InputIterator, class OutputIterator, class StrictWeakOrdering>
OutputIterator upper_bound(ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output,
StrictWeakOrdering comp);
/*! \p binary_search is a vectorized version of binary search: for each
* iterator \c v in <tt>[values_first, values_last)</tt> it attempts to
* find the value <tt>*v</tt> in an ordered range <tt>[first, last)</tt>.
* It returns \c true if an element that is equivalent to \c value
* is present in <tt>[first, last)</tt> and \c false if no such element
* exists.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param values_first The beginning of the search values sequence.
* \param values_last The end of the search values sequence.
* \param output The beginning of the output sequence.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>.
* and \c InputIterator's \c value_type is <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
* and bool is convertible to \c OutputIterator's \c value_type.
*
* The following code snippet demonstrates how to use \p binary_search
* to search for multiple values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::device_vector<int> values(6);
* values[0] = 0;
* values[1] = 1;
* values[2] = 2;
* values[3] = 3;
* values[4] = 8;
* values[5] = 9;
*
* thrust::device_vector<bool> output(6);
*
* thrust::binary_search(input.begin(), input.end(),
* values.begin(), values.end(),
* output.begin());
*
* // output is now [true, false, true, false, true, false]
* \endcode
*
* \see http://www.sgi.com/tech/stl/binary_search.html
* \see \p lower_bound
* \see \p upper_bound
* \see \p equal_range
*/
template <class ForwardIterator, class InputIterator, class OutputIterator>
OutputIterator binary_search(ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output);
/*! \p binary_search is a vectorized version of binary search: for each
* iterator \c v in <tt>[values_first, values_last)</tt> it attempts to
* find the value <tt>*v</tt> in an ordered range <tt>[first, last)</tt>.
* It returns \c true if an element that is equivalent to \c value
* is present in <tt>[first, last)</tt> and \c false if no such element
* exists. This version of \p binary_search uses function object
* \c comp for comparison.
*
* \param first The beginning of the ordered sequence.
* \param last The end of the ordered sequence.
* \param values_first The beginning of the search values sequence.
* \param values_last The end of the search values sequence.
* \param output The beginning of the output sequence.
* \param comp The comparison operator.
*
* \tparam ForwardIterator is a model of <a href="http://www.sgi.com/tech/stl/ForwardIterator">Forward Iterator</a>.
* \tparam InputIterator is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>.
* and \c InputIterator's \c value_type is <a href="http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>.
* and bool is convertible to \c OutputIterator's \c value_type.
* \tparam StrictWeakOrdering is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>.
*
* The following code snippet demonstrates how to use \p binary_search
* to search for multiple values in a ordered range.
*
* \code
* #include <thrust/binary_search.h>
* #include <thrust/device_vector.h>
* #include <thrust/functional.h>
* ...
* thrust::device_vector<int> input(5);
*
* input[0] = 0;
* input[1] = 2;
* input[2] = 5;
* input[3] = 7;
* input[4] = 8;
*
* thrust::device_vector<int> values(6);
* values[0] = 0;
* values[1] = 1;
* values[2] = 2;
* values[3] = 3;
* values[4] = 8;
* values[5] = 9;
*
* thrust::device_vector<bool> output(6);
*
* thrust::binary_search(input.begin(), input.end(),
* values.begin(), values.end(),
* output.begin(),
* thrust::less<T>());
*
* // output is now [true, false, true, false, true, false]
* \endcode
*
* \see http://www.sgi.com/tech/stl/binary_search.html
* \see \p lower_bound
* \see \p upper_bound
* \see \p equal_range
*/
template <class ForwardIterator, class InputIterator, class OutputIterator, class StrictWeakOrdering>
OutputIterator binary_search(ForwardIterator first,
ForwardIterator last,
InputIterator values_first,
InputIterator values_last,
OutputIterator output,
StrictWeakOrdering comp);
/*! \} // end vectorized_binary_search
*/
/*! \} // end binary_search
*/
/*! \} // end searching
*/
} // end namespace thrust
#include <thrust/detail/binary_search.inl>