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Diffstat (limited to 'misc/uClibc++/include/cxx/algorithm')
-rw-r--r-- | misc/uClibc++/include/cxx/algorithm | 1695 |
1 files changed, 1695 insertions, 0 deletions
diff --git a/misc/uClibc++/include/cxx/algorithm b/misc/uClibc++/include/cxx/algorithm new file mode 100644 index 000000000..5e8f139c0 --- /dev/null +++ b/misc/uClibc++/include/cxx/algorithm @@ -0,0 +1,1695 @@ +/* Copyright (C) 2004 Garrett A. Kajmowicz + This file is part of the uClibc++ Library. + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <cstdlib> +#include <iterator> +#include <utility> +#include <functional> + +#ifndef __STD_HEADER_ALGORITHM +#define __STD_HEADER_ALGORITHM 1 + +//Elliminate any previously defined macro +#undef min +#undef max + +#pragma GCC visibility push(default) + +namespace std{ + + // subclause _lib.alg.nonmodifying_, non-modifying sequence operations: + template<class InputIterator, class Function> _UCXXEXPORT + Function for_each(InputIterator first, InputIterator last, Function f) + { + while(first !=last){ + f(*first); + ++first; + } + return f; + } + + + template<class InputIterator, class T> _UCXXEXPORT + InputIterator find(InputIterator first, InputIterator last, const T& value) + { + while(first !=last && *first != value){ + ++first; + } + return first; + } + + template<class InputIterator, class Predicate> _UCXXEXPORT + InputIterator find_if(InputIterator first, InputIterator last, Predicate pred) + { + while(first !=last && !pred(*first)){ + ++first; + } + return first; + } + + template<class ForwardIterator1, class ForwardIterator2> _UCXXEXPORT ForwardIterator1 + find_end(ForwardIterator1 first1, ForwardIterator1 last1, + ForwardIterator2 first2, ForwardIterator2 last2) + { + ForwardIterator1 retval = last1; + while(first1 !=last1){ + ForwardIterator1 temp1(first1); + ForwardIterator2 temp2(first2); + while(temp2!=last2 && temp1!= last1){ + if(*temp1 != *temp2){ + break; //Exit while loop + } + ++temp1; + ++temp2; + if(temp2 == last2){ //Have successfully checked the whole sequence + retval = first1; + } + } + } + return retval; + } + + template<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> _UCXXEXPORT + ForwardIterator1 + find_end(ForwardIterator1 first1, ForwardIterator1 last1, + ForwardIterator2 first2, ForwardIterator2 last2, + BinaryPredicate pred) + { + ForwardIterator1 retval = last1; + while(first1 !=last1){ + ForwardIterator1 temp1(first1); + ForwardIterator2 temp2(first2); + while(temp2!=last2 && temp1!= last1){ + if( ! pred(*temp1, *temp2)){ + break; //Exit while loop + } + ++temp1; + ++temp2; + if(temp2 == last2){ //Have successfully checked the whole sequence + retval = first1; + } + } + } + return retval; + } + + template<class ForwardIterator1, class ForwardIterator2> _UCXXEXPORT + ForwardIterator1 + find_first_of(ForwardIterator1 first1, ForwardIterator1 last1, + ForwardIterator2 first2, ForwardIterator2 last2) + { + while(first1 != last1){ + ForwardIterator2 temp2(first2); + while(temp2 != last2 ){ + if(*temp2 == first1){ + return first1; + } + ++temp2; + } + + } + return last1; + } + + template<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> _UCXXEXPORT + ForwardIterator1 + find_first_of(ForwardIterator1 first1, ForwardIterator1 last1, + ForwardIterator2 first2, ForwardIterator2 last2, + BinaryPredicate pred) + { + while(first1 != last1){ + ForwardIterator2 temp2(first2); + while(temp2 != last2 ){ + if(*temp2 == first1){ + return first1; + } + ++temp2; + } + + } + return last1; + } + + template<class ForwardIterator> _UCXXEXPORT ForwardIterator + adjacent_find(ForwardIterator first, ForwardIterator last) + { + ForwardIterator temp; + while(first != last){ + temp = first; + ++temp; + if(*temp == *first){ + return first; + } + ++first; + } + return first; + } + + template<class ForwardIterator, class BinaryPredicate> _UCXXEXPORT + ForwardIterator + adjacent_find(ForwardIterator first, ForwardIterator last, BinaryPredicate pred) + { + ForwardIterator temp; + while(first != last){ + temp = first; + ++temp; + if( pred(*temp, *first)){ + return first; + } + ++first; + } + return first; + } + + template<class InputIterator, class T> _UCXXEXPORT + typename iterator_traits<InputIterator>::difference_type + count(InputIterator first, InputIterator last, const T& value) + { + typename iterator_traits<InputIterator>::difference_type i = 0; + while(first!=last){ + if(*first == value){ + ++i; + } + ++first; + } + return i; + } + + template<class InputIterator, class Predicate> _UCXXEXPORT + typename iterator_traits<InputIterator>::difference_type + count_if(InputIterator first, InputIterator last, Predicate pred) + { + typename iterator_traits<InputIterator>::difference_type i = 0; + while(first!=last){ + if( pred(*first) ){ + ++i; + } + ++first; + } + return i; + } + + template<class InputIterator1, class InputIterator2> _UCXXEXPORT + pair<InputIterator1, InputIterator2> + mismatch(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2) + { + while(first1 != last1){ + if(*first1 != *first2){ + break; + } + ++first1; + ++first2; + } + + pair<InputIterator1, InputIterator2> retval; + retval.first = first1; + retval.second = first2; + return retval; + } + + template<class InputIterator1, class InputIterator2, class BinaryPredicate> _UCXXEXPORT + pair<InputIterator1, InputIterator2> + mismatch(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, BinaryPredicate pred) + { + while(first1 != last1){ + if( !pred(*first1, *first2) ){ + break; + } + ++first1; + ++first2; + } + + pair<InputIterator1, InputIterator2> retval; + retval.first = first1; + retval.second = first2; + return retval; + } + + template<class InputIterator1, class InputIterator2> _UCXXEXPORT + bool + equal(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2) + { + while(first1 !=last1){ + if(*first1 != *first2){ + return false; + } + ++first1; + ++first2; + } + return true; + } + + template<class InputIterator1, class InputIterator2, class BinaryPredicate> _UCXXEXPORT + bool + equal(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, BinaryPredicate pred) + { + while(first1 !=last1){ + if( !pred(*first1, *first2) ){ + return false; + } + ++first1; + ++first2; + } + return true; + } + + template<class ForwardIterator1, class ForwardIterator2> _UCXXEXPORT + ForwardIterator1 search(ForwardIterator1 first1, ForwardIterator1 last1, + ForwardIterator2 first2, ForwardIterator2 last2) + { + equal_to<typename iterator_traits<ForwardIterator1>::value_type> c; + return search(first1, last1, first2, last2, c); + } + + + template<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate> _UCXXEXPORT + ForwardIterator1 + search(ForwardIterator1 first1, ForwardIterator1 last1, + ForwardIterator2 first2, ForwardIterator2 last2, + BinaryPredicate pred) + { + while(first1 != last1){ + ForwardIterator1 temp1(first1); + ForwardIterator2 temp2(first2); + while(temp2 != last2 && temp1 != last1){ + if( !pred(*temp2, *temp1) ){ + break; + } + ++temp1; + ++temp2; + if(temp2 == last2){ + return first1; + } + } + ++first1; + } + return last1; + } + + + template<class ForwardIterator, class Size, class T> _UCXXEXPORT + ForwardIterator + search_n(ForwardIterator first, ForwardIterator last, Size count, const T& value) + { + while( first != last ){ + if(*first == value){ + ForwardIterator temp(first); + Size i = 1; + ++first; //Avoid doing the same comparison over again + while(i < count && *temp == value){ + ++first; + ++i; + } + if(i == count){ + return first; + } + } + ++first; + } + return first; + } + + + template<class ForwardIterator, class Size, class T, class BinaryPredicate> _UCXXEXPORT + ForwardIterator + search_n(ForwardIterator first, ForwardIterator last, + Size count, const T& value, BinaryPredicate pred) + { + while( first != last ){ + if( pred(*first, value) ){ + ForwardIterator temp(first); + Size i = 1; + ++first; //Avoid doing the same comparison over again + while(i < count && pred(*temp, value) ){ + ++first; + ++i; + } + if(i == count){ + return first; + } + } + ++first; + } + return first; + + } + + // subclause _lib.alg.modifying.operations_, modifying sequence operations: + + template<class InputIterator, class OutputIterator> _UCXXEXPORT + OutputIterator + copy(InputIterator first, InputIterator last, OutputIterator result) + { + while(first != last){ + *result = *first; + ++first; + ++result; + } + return result; + } + + template<class BidirectionalIterator1, class BidirectionalIterator2> _UCXXEXPORT + BidirectionalIterator2 + copy_backward(BidirectionalIterator1 first, BidirectionalIterator1 last, + BidirectionalIterator2 result) + { + while(first !=last ){ + --result; + --last; + *result = *last; + } + return result; + } + + template<class T> _UCXXEXPORT void swap(T& a, T& b){ + T temp(a); + a = b; + b = temp; + } + + template<class ForwardIterator1, class ForwardIterator2> _UCXXEXPORT + ForwardIterator2 + swap_ranges(ForwardIterator1 first1, ForwardIterator1 last1, ForwardIterator2 first2) + { + while(first1 != last1){ + iter_swap(first1, first2); + ++first1; + ++first2; + } + return first2; + } + + + template<class ForwardIterator1, class ForwardIterator2> _UCXXEXPORT + void + iter_swap(ForwardIterator1 a, ForwardIterator2 b) + { + typename iterator_traits<ForwardIterator1>::value_type temp(*a); + *a = *b; + *b = temp; + } + + + template<class InputIterator, class OutputIterator, class UnaryOperation> _UCXXEXPORT + OutputIterator + transform(InputIterator first, InputIterator last, + OutputIterator result, UnaryOperation op) + { + while(first != last){ + *result = op(*first); + ++first; + ++result; + } + return result; + } + + + template<class InputIterator1, class InputIterator2, class OutputIterator, class BinaryOperation> _UCXXEXPORT + OutputIterator transform(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, OutputIterator result, + BinaryOperation binary_op) + { + while(first1 != last1){ + *result = binary_op(*first1, *first2); + ++first1; + ++first2; + ++result; + } + return result; + } + + + template<class ForwardIterator, class T> _UCXXEXPORT + void + replace(ForwardIterator first, ForwardIterator last, + const T& old_value, const T& new_value) + { + while(first != last){ + if(*first == old_value){ + *first = new_value; + } + ++first; + } + } + + template<class ForwardIterator, class Predicate, class T> _UCXXEXPORT + void + replace_if(ForwardIterator first, ForwardIterator last, + Predicate pred, const T& new_value) + { + while(first != last){ + if( pred(*first) ){ + *first = new_value; + } + ++first; + } + } + + + template<class InputIterator, class OutputIterator, class T> _UCXXEXPORT + OutputIterator + replace_copy(InputIterator first, InputIterator last, + OutputIterator result, const T& old_value, const T& new_value) + { + while(first != last){ + if(*first == old_value){ + *result = new_value; + }else{ + *result = *first; + } + ++first; + ++result; + } + return result; + } + + template<class Iterator, class OutputIterator, class Predicate, class T> _UCXXEXPORT + OutputIterator + replace_copy_if(Iterator first, Iterator last, + OutputIterator result, Predicate pred, const T& new_value) + { + while(first != last){ + if( pred(*first) ){ + *result = new_value; + }else{ + *result = *first; + } + ++first; + ++result; + } + return result; + } + + template<class ForwardIterator, class T> _UCXXEXPORT + void + fill(ForwardIterator first, ForwardIterator last, const T& value) + { + while(first != last){ + *first = value; + ++first; + } + } + + template<class OutputIterator, class Size, class T> _UCXXEXPORT + void + fill_n(OutputIterator first, Size n, const T& value) + { + while(n != 0){ + *first = value; + --n; + ++first; + } + } + + template<class ForwardIterator, class Generator> _UCXXEXPORT + void + generate(ForwardIterator first, ForwardIterator last, Generator gen) + { + while(first != last){ + *first = gen(); + ++first; + } + } + + template<class OutputIterator, class Size, class Generator> _UCXXEXPORT + void + generate_n(OutputIterator first, Size n, Generator gen) + { + while(n !=0){ + *first = gen(); + --n; + ++first; + } + } + + template<class ForwardIterator, class T> _UCXXEXPORT + ForwardIterator + remove(ForwardIterator first, ForwardIterator last, const T& value) + { + ForwardIterator temp(first); + while(temp !=last){ + if(*temp == value){ + + }else{ + *first = *temp; + ++first; + } + ++temp; + } + return first; + } + + template<class ForwardIterator, class Predicate> _UCXXEXPORT + ForwardIterator + remove_if(ForwardIterator first, ForwardIterator last, Predicate pred) + { + ForwardIterator temp(first); + while(temp !=last){ + if( pred(*temp) ){ + + }else{ + *first = *temp; + ++first; + } + ++temp; + } + return first; + } + + + template<class InputIterator, class OutputIterator, class T> _UCXXEXPORT + OutputIterator + remove_copy(InputIterator first, InputIterator last, + OutputIterator result, const T& value) + { + while(first !=last){ + if(*first != value){ + *result = *first; + ++result; + } + ++first; + } + return result; + } + + template<class InputIterator, class OutputIterator, class Predicate> _UCXXEXPORT + OutputIterator + remove_copy_if(InputIterator first, InputIterator last, + OutputIterator result, Predicate pred) + { + while(first !=last){ + if( !pred(*first) ){ + *result = *first; + ++result; + } + ++first; + } + return result; + } + + template<class ForwardIterator> _UCXXEXPORT + ForwardIterator + unique(ForwardIterator first, ForwardIterator last) + { + ForwardIterator new_val(first); + ForwardIterator old_val(first); + + while(new_val !=last){ + if(*new_val == *old_val && new_val != old_val){ + + }else{ + *first = *new_val; + old_val = new_val; + ++first; + } + ++new_val; + } + return first; + } + + template<class ForwardIterator, class BinaryPredicate> _UCXXEXPORT + ForwardIterator + unique(ForwardIterator first, ForwardIterator last, BinaryPredicate pred) + { + ForwardIterator new_val(first); + ForwardIterator old_val(first); + + while(new_val !=last){ + if( pred(*new_val, *old_val) && new_val != old_val){ + + }else{ + *first = *new_val; + old_val = new_val; + ++first; + } + ++new_val; + } + return first; + } + + template<class InputIterator, class OutputIterator> _UCXXEXPORT + OutputIterator + unique_copy(InputIterator first, InputIterator last, OutputIterator result) + { + InputIterator temp(first); + while(first !=last ){ + if(*first == *temp && first != temp){ + + }else{ + *result = *first; + temp = first; + ++result; + } + ++first; + } + return result; + } + + template<class InputIterator, class OutputIterator, class BinaryPredicate> _UCXXEXPORT + OutputIterator + unique_copy(InputIterator first, InputIterator last, + OutputIterator result, BinaryPredicate pred) + { + InputIterator temp(first); + while(first !=last ){ + if( pred(*first, *temp) && first != temp){ + + }else{ + *result = *first; + temp = first; + ++result; + } + ++first; + } + return result; + } + + template<class BidirectionalIterator> _UCXXEXPORT + void + reverse(BidirectionalIterator first, BidirectionalIterator last) + { + --last; //Don't work with one past the end element + while(first < last){ + iter_swap(first, last); + ++first; + --last; + } + } + + template<class BidirectionalIterator, class OutputIterator> _UCXXEXPORT + OutputIterator + reverse_copy(BidirectionalIterator first, BidirectionalIterator last, + OutputIterator result) + { + while(last > first){ + --last; + *result = *last; + ++result; + } + return result; + } + + template<class ForwardIterator> _UCXXEXPORT + void + rotate(ForwardIterator first, ForwardIterator middle, ForwardIterator last) + { + if ((first == middle) || (last == middle)){ + return; + } + + ForwardIterator first2 = middle; + + do { + swap(*first, *first2); + first++; + first2++; + if(first == middle){ + middle = first2; + } + } while(first2 != last); + + first2 = middle; + + while (first2 != last) { + swap(*first, *first2); + first++; + first2++; + if (first == middle){ + middle = first2; + }else if (first2 == last){ + first2 = middle; + } + } + } + + template<class ForwardIterator, class OutputIterator> _UCXXEXPORT + OutputIterator + rotate_copy(ForwardIterator first, ForwardIterator middle, + ForwardIterator last, OutputIterator result) + { + ForwardIterator temp(middle); + while(temp !=last){ + *result = *temp; + ++temp; + ++result; + } + while(first != middle){ + *result = *first; + ++first; + ++result; + } + return result; + } + + + template<class RandomAccessIterator> _UCXXEXPORT + void + random_shuffle(RandomAccessIterator first, RandomAccessIterator last) + { + --last; + while(first != last){ + iter_swap(first, (first + (rand() % (last - first) ) ) ); + ++first; + } + } + + template<class RandomAccessIterator, class RandomNumberGenerator> _UCXXEXPORT + void + random_shuffle(RandomAccessIterator first, RandomAccessIterator last, + RandomNumberGenerator& rand) + { + --last; + while(first != last){ + iter_swap(first, (first + (rand(last - first) ) ) ); + ++first; + } + } + + // _lib.alg.partitions_, partitions: + template<class BidirectionalIterator, class Predicate> _UCXXEXPORT BidirectionalIterator + partition(BidirectionalIterator first, BidirectionalIterator last, Predicate pred) + { + return stable_partition(first, last, pred); + } + + template<class BidirectionalIterator, class Predicate> _UCXXEXPORT BidirectionalIterator + stable_partition(BidirectionalIterator first, BidirectionalIterator last, Predicate pred) + { + //first now points to the first non-desired element + while( first != last && pred(*first) ){ + ++first; + } + + BidirectionalIterator tempb; + BidirectionalIterator tempe = first; + + while( tempe != last ){ + //Find the next desired element + while( !pred(*tempe) ){ + ++tempe; + + //See if we should exit + if(tempe == last){ + return first; + } + } + + //Rotate the element back to the begining + tempb = tempe; + while(tempb != first){ + iter_swap(tempb, tempb-1 ); + --tempb; + } + //First now has a desired element + ++first; + } + + return first; + } + + template<class RandomAccessIterator> _UCXXEXPORT + void sort(RandomAccessIterator first, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + sort(first, last, c ); + } + + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp) + { + stable_sort(first, last, comp); + } + + template<class RandomAccessIterator> _UCXXEXPORT + void stable_sort(RandomAccessIterator first, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + stable_sort(first, last, c); + } + + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void stable_sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp) + { + //FIXME - bubble sort + RandomAccessIterator temp; + --last; + while(last - first > 0){ + temp = last; + while(temp != first){ + if( comp( *temp, *(temp-1) ) ){ + iter_swap( temp-1, temp); + } + --temp; + } + ++first; + } + } + + template<class RandomAccessIterator> _UCXXEXPORT + void partial_sort(RandomAccessIterator first, RandomAccessIterator middle, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + partial_sort(first, middle, last, c); + } + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void partial_sort(RandomAccessIterator first, RandomAccessIterator middle, + RandomAccessIterator last, Compare comp) + { + //Fixme - partial bubble sort + RandomAccessIterator temp; + --last; + while(first < middle){ + temp = last; + while(temp != first){ + if( comp(*temp, *(temp -1 ) ) ) { + iter_swap( temp-1, temp); + } + --temp; + } + ++first; + } + } + template<class InputIterator, class RandomAccessIterator> _UCXXEXPORT + RandomAccessIterator + partial_sort_copy(InputIterator first, InputIterator last, + RandomAccessIterator result_first, RandomAccessIterator result_last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + return partial_sort_copy(first, last, result_first, result_last, c); + } + template<class InputIterator, class RandomAccessIterator, class Compare> _UCXXEXPORT + RandomAccessIterator + partial_sort_copy(InputIterator first, InputIterator last, + RandomAccessIterator result_first, RandomAccessIterator result_last, Compare comp) + { + size_t output_size = last-first; + size_t temp_size = result_last - result_first; + if(temp_size < output_size){ + output_size = temp_size; + } + + RandomAccessIterator middle = result_first + output_size; + RandomAccessIterator temp = result_first; + + while(temp != middle){ + *temp = *first; + ++temp; + ++first; + } + sort(result_first, middle, comp); + + while( first != last){ + if( comp( *first, *(middle-1) ) ){ + *(middle-1) = *first; + sort(result_first, middle, comp); + } + ++first; + } + + return middle; + } + template<class RandomAccessIterator> _UCXXEXPORT + void nth_element(RandomAccessIterator first, RandomAccessIterator nth, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + nth_element(first, nth, last, c); + } + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void nth_element(RandomAccessIterator first, RandomAccessIterator nth, + RandomAccessIterator last, Compare comp) + { + partial_sort(first, nth, last, comp); + } + + template<class ForwardIterator, class T> _UCXXEXPORT + ForwardIterator lower_bound(ForwardIterator first, ForwardIterator last, + const T& value) + { + less<typename iterator_traits<ForwardIterator>::value_type> c; + return lower_bound(first, last, value, c); + } + + template<class ForwardIterator, class T, class Compare> _UCXXEXPORT + ForwardIterator lower_bound(ForwardIterator first, ForwardIterator last, + const T& value, Compare comp) + { + if(first == last){ + return last; + } + //If below or equal to the first element + if( comp(*first, value) == false){ + return first; + } + ForwardIterator middle; + + //If greater than the top element + middle = first; + advance(middle, distance(first, last) - 1); + if( comp(*middle, value) ){ + return last; + } + + //Now begin the actual search for the begining + while( distance(first, last) > 1 ){ + //Find middle + middle = first; + advance(middle, (distance(first, last)/2) ); + if( !comp(*middle, value) ){ + last = middle; + }else{ + first = middle; + } + } + + if( !comp(*first, value) ){ + return first; + } + return last; + } + + template<class ForwardIterator, class T> _UCXXEXPORT + ForwardIterator upper_bound(ForwardIterator first, ForwardIterator last, + const T& value) + { + less<typename iterator_traits<ForwardIterator>::value_type> c; + return upper_bound(first, last, value, c); + } + + + template<class ForwardIterator, class T, class Compare> _UCXXEXPORT + ForwardIterator upper_bound(ForwardIterator first, ForwardIterator last, + const T& value, Compare comp) + { + if(first == last){ + return last; + } + //If below the first element + if( comp(value, *first) == true){ + return first; + } + + ForwardIterator middle; + + //If greater than the top element + middle = first; + advance(middle, distance(first, last) - 1); + if( comp(*middle, value) ){ + return last; + } + + //Now begin the actual search for the end + while( distance(first, last) > 1 ){ + //Find middle + middle = first; + advance(middle, (distance(first, last)/2) ); + if( comp(value, *middle) ){ + last = middle; + }else{ + first = middle; + } + } + + if( comp(value, *first) ){ + return first; + } + return last; + } + + + template<class ForwardIterator, class T> _UCXXEXPORT + pair<ForwardIterator, ForwardIterator> + equal_range(ForwardIterator first, ForwardIterator last, const T& value) + { + less<typename iterator_traits<ForwardIterator>::value_type> c; + return equal_range(first, last, value, c); + } + + template<class ForwardIterator, class T, class Compare> _UCXXEXPORT + pair<ForwardIterator, ForwardIterator> + equal_range(ForwardIterator first, ForwardIterator last, const T& value, Compare comp) + { + pair<ForwardIterator, ForwardIterator> retval; + retval.first = lower_bound(first, last, value, comp); + //Reuse retval.first in order to (possibly) save a few comparisons + retval.second = upper_bound(retval.first, last, value, comp); + return retval; + + } + + template<class ForwardIterator, class T> _UCXXEXPORT + bool binary_search(ForwardIterator first, ForwardIterator last, + const T& value) + { + less<typename iterator_traits<ForwardIterator>::value_type> c; + return binary_search(first, last, value, c); + } + + template<class ForwardIterator, class T, class Compare> _UCXXEXPORT + bool binary_search(ForwardIterator first, ForwardIterator last, + const T& value, Compare comp) + { + if( distance(first, last) == 0){ + return false; + } + + ForwardIterator middle; + + while( distance(first, last) > 1 ){ + //Set middle between first and last + middle = first; + advance(middle, distance(first, last)/2 ); + + if( comp(*middle, value ) == true){ + first = middle; + }else{ + last = middle; + } + } + + if( !comp(*first, value) && !comp(value, *first) ){ + return true; + } + if( !comp(*last, value) && !comp(value, *last) ){ + return true; + } + + return false; + } + + // _lib.alg.merge_, merge: + template<class InputIterator1, class InputIterator2, class OutputIterator> _UCXXEXPORT + OutputIterator + merge(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result) + { + less<typename iterator_traits<InputIterator1>::value_type> c; + return merge(first1, last1, first2, last2, result, c); + } + template<class InputIterator1, class InputIterator2, class OutputIterator, class Compare> _UCXXEXPORT + OutputIterator + merge(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp) + { + while( first1 != last1 && first2 != last2){ + //If in this order so first1 elements which are equal come first + if( comp(*first2, *first1) ){ + *result = *first2; + ++first2; + }else{ + *result = *first1; + ++first1; + } + ++result; + } + //Clean up remaining elements + while(first1 != last1){ + *result = *first1; + ++first1; + ++result; + } + while(first2 != last2){ + *result = *first2; + ++first2; + ++result; + } + return result; + } + template<class BidirectionalIterator> _UCXXEXPORT + void inplace_merge(BidirectionalIterator first, + BidirectionalIterator middle, BidirectionalIterator last) + { + less<typename iterator_traits<BidirectionalIterator>::value_type> c; + inplace_merge(first, middle, last, c); + } + template<class BidirectionalIterator, class Compare> _UCXXEXPORT + void inplace_merge(BidirectionalIterator first, + BidirectionalIterator middle, BidirectionalIterator last, Compare comp) + { + //FIXME - using a bubble exchange method + while(first != middle && middle !=last){ + if( comp(*middle, *first) ){ + BidirectionalIterator temp(middle); + while( temp != first){ + iter_swap(temp, temp-1); + --temp; + } + ++middle; + } + ++first; + } + } + + // _lib.alg.set.operations_, set operations: + template<class InputIterator1, class InputIterator2> _UCXXEXPORT + bool includes(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2) + { + less<typename iterator_traits<InputIterator1>::value_type> c; + return includes(first1, last1, first2, last2, c ); + } + + template<class InputIterator1, class InputIterator2, class Compare> _UCXXEXPORT + bool includes(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, Compare comp) + { + while(first2 != last2){ + //Advance the large set until no longer smaller than the element we are looking for + while( comp(*first1, *first2) ){ + ++first1; + //If we are at the end of the list, we don't have the desired element + if(first1 == last1){ + return false; + } + } + //If we are past the element we want, it isn't here + if( comp(*first2, *first1) ){ + return false; + } + ++first2; //Move to next element + } + return true; + } + + template<class InputIterator1, class InputIterator2, class OutputIterator> _UCXXEXPORT + OutputIterator set_union(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result) + { + less<typename iterator_traits<InputIterator1>::value_type> c; + return set_union(first1, last1, first2, last2, result, c); + } + + template<class InputIterator1, class InputIterator2, class OutputIterator, class Compare> _UCXXEXPORT + OutputIterator set_union(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp) + { + while( first1 != last1 && first2 != last2){ + if( comp(*first2, *first1) ){ + *result = *first2; + + //Elliminate duplicates + InputIterator2 temp = first2; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + }else{ + *result = *first1; + //Elliminate duplicates + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + } + ++result; + } + + //Clean up remaining elements + while(first1 != last1){ + *result = *first1; + ++result; + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + } + + while(first2 != last2){ + *result = *first2; + ++result; + InputIterator2 temp = first2; + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + } + return result; + } + + template<class InputIterator1, class InputIterator2, class OutputIterator> _UCXXEXPORT + OutputIterator set_intersection(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result) + { + less<typename iterator_traits<InputIterator1>::value_type> c; + return set_intersection(first1, last1, first2, last2, result, c); + } + template<class InputIterator1, class InputIterator2, class OutputIterator, class Compare> _UCXXEXPORT + OutputIterator set_intersection(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp) + { + while( first1 != last1 && first2 != last2){ + if( comp(*first2, *first1) ){ + ++first2; + }else if( comp(*first1, *first2) ) { + ++first1; + }else{ + *result = *first1; + ++result; + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + ++first2; + } + } + return result; + } + template<class InputIterator1, class InputIterator2, class OutputIterator> _UCXXEXPORT + OutputIterator set_difference(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result) + { + less<typename iterator_traits<InputIterator1>::value_type> c; + return set_difference(first1, last1, first2, last2, result, c); + } + template<class InputIterator1, class InputIterator2, class OutputIterator, class Compare> _UCXXEXPORT + OutputIterator set_difference(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp) + { + while( first1 != last1 && first2 != last2){ + if( comp(*first1, *first2) ){ + *result = *first1; + ++result; + + //Elliminate duplicates + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + }else if( comp(*first2, *first1) ){ + + //Elliminate duplicates + InputIterator2 temp = first2; + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + + }else{ //They are identical - skip + //Elliminate duplicates + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + } + } + + //Clean up remaining elements + while(first1 != last1){ + *result = *first1; + ++result; + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + } + + return result; + } + template<class InputIterator1, class InputIterator2, class OutputIterator> _UCXXEXPORT + OutputIterator set_symmetric_difference(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result) + { + less<typename iterator_traits<InputIterator1>::value_type> c; + return set_symmetric_difference(first1, last1, first2, last2, result, c); + } + template<class InputIterator1, class InputIterator2, class OutputIterator, class Compare> _UCXXEXPORT + OutputIterator set_symmetric_difference(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, OutputIterator result, Compare comp) + { + while( first1 != last1 && first2 != last2){ + if( comp(*first1, *first2) ){ + *result = *first1; + ++result; + + //Elliminate duplicates + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + }else if( comp(*first2, *first1) ){ + *result = *first2; + ++result; + + //Elliminate duplicates + InputIterator2 temp = first2; + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + + }else{ //They are identical - skip + //Elliminate duplicates + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + } + } + + //Clean up remaining elements + while(first1 != last1){ + *result = *first1; + ++result; + InputIterator1 temp = first1; + while( first1 != last1 && !comp( *temp, *first1) ){ + ++first1; + } + } + + while(first2 != last2){ + *result = *first2; + ++result; + InputIterator2 temp = first2; + while( first2 != last2 && !comp( *temp, *first2) ){ + ++first2; + } + } + + return result; + } + + // _lib.alg.heap.operations_, heap operations: + + template<class RandomAccessIterator> _UCXXEXPORT + void push_heap(RandomAccessIterator first, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + push_heap(first, last, c); + } + + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void push_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp) + { + // *(last - 1) is the last element + RandomAccessIterator begin, middle, end; + begin = first; + end = last - 2; + if(last - first < 2){ //Empty heap + return; + } + if ( comp(*(last-1), *end) ){ //Belongs past the end - already in place + return; + } + while(end - begin > 1){ + middle = begin + ((end - begin)/2); + if( comp(*middle, *(last-1) ) ){ + end = middle; + }else{ + begin = middle; + } + } + + if( comp(*begin, *(last-1)) ){ + middle = begin; + }else{ + middle = end; + } + + //Now all we do is swap the elements up to the begining + --last; + + while(last > middle){ + iter_swap(last, last-1); + --last; + } + } + + template<class RandomAccessIterator> _UCXXEXPORT + void pop_heap(RandomAccessIterator first, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + pop_heap(first, last, c); + } + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void pop_heap(RandomAccessIterator first, RandomAccessIterator last, Compare) + { + --last; + while(first < last){ + iter_swap( first, first+1); + ++first; + } + } + + template<class RandomAccessIterator> _UCXXEXPORT + void make_heap(RandomAccessIterator first, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + make_heap(first, last, c); + } + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void make_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp) + { + sort( reverse_iterator<RandomAccessIterator>(last), reverse_iterator<RandomAccessIterator>(first), comp); + } + template<class RandomAccessIterator> _UCXXEXPORT + void sort_heap(RandomAccessIterator first, RandomAccessIterator last) + { + less<typename iterator_traits<RandomAccessIterator>::value_type> c; + sort_heap(first, last, c); + } + template<class RandomAccessIterator, class Compare> _UCXXEXPORT + void sort_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp) + { + sort( first, last, comp); + } + + + // _lib.alg.min.max_, minimum and maximum: + template<class T> _UCXXEXPORT + const T& min(const T& a, const T& b) + { + if(b < a){ + return b; + } + return a; + } + + template<class T, class Compare> _UCXXEXPORT + const T& min(const T& a, const T& b, Compare comp) + { + if( comp(b, a) == true){ + return b; + } + return a; + } + + template<class T> _UCXXEXPORT + const T& max(const T& a, const T& b) + { + if( a < b){ + return b; + } + return a; + } + + template<class T, class Compare> _UCXXEXPORT + const T& max(const T& a, const T& b, Compare comp) + { + if( comp(a, b) ){ + return b; + } + return a; + } + + template<class ForwardIterator> _UCXXEXPORT + ForwardIterator min_element(ForwardIterator first, ForwardIterator last) + { + less<typename iterator_traits<ForwardIterator>::value_type> c; + return min_element(first, last, c); + } + + template<class ForwardIterator, class Compare> _UCXXEXPORT + ForwardIterator min_element(ForwardIterator first, ForwardIterator last, Compare comp) + { + ForwardIterator retval = first; + ++first; + while(first != last){ + if( comp( *first, *retval) ){ + retval = first; + } + ++first; + } + return retval; + } + + template<class ForwardIterator> _UCXXEXPORT + ForwardIterator max_element(ForwardIterator first, ForwardIterator last) + { + less<typename iterator_traits<ForwardIterator>::value_type> c; + return max_element(first, last, c); + } + + template<class ForwardIterator, class Compare> _UCXXEXPORT + ForwardIterator max_element(ForwardIterator first, ForwardIterator last, Compare comp) + { + ForwardIterator retval = first; + ++first; + while(first != last){ + if( comp( *retval, *first ) ){ + retval = first; + } + ++first; + } + return retval; + } + + template<class InputIterator1, class InputIterator2> _UCXXEXPORT + bool lexicographical_compare(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2) + { + less<typename iterator_traits<InputIterator1>::value_type> c; + return lexicographical_compare(first1, last1, first2, last2, c); + } + + template<class InputIterator1, class InputIterator2, class Compare> _UCXXEXPORT + bool lexicographical_compare(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, InputIterator2 last2, Compare comp) + { + while(first1 != last1 && first2 != last2){ + if( comp(*first1, *first2) ){ + return true; + } + if( comp(*first2, *first1) ){ + return false; + } + ++first1; + ++first2; + } + return first1==last1 && first2 != last2; + } + + // _lib.alg.permutation.generators_, permutations + template<class BidirectionalIterator> _UCXXEXPORT + bool next_permutation(BidirectionalIterator first, BidirectionalIterator last) + { + less<typename iterator_traits<BidirectionalIterator>::value_type> c; + return next_permutation(first, last, c); + } + + template<class BidirectionalIterator, class Compare> _UCXXEXPORT + bool next_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp) + { + if(first == last){ + return false; // No data + } + BidirectionalIterator i = last; + --i; + if(i == first){ + return false; //Only one element + } + BidirectionalIterator ii = i; + --ii; + //If the last two items are in order, swap them and call it done + if( comp(*ii, *i) ){ + iter_swap(ii, i); + return true; + } + + + //This part of the algorithm copied from G++ header files ver. 3.4.2 + i = last; + --i; + for(;;){ + ii = i; + --i; + if ( comp(*i, *ii) ){ + BidirectionalIterator j = last; + --j; + while ( !comp(*i, *j)){ + --j; + } + iter_swap(i, j); + reverse(ii, last); + return true; + } + if (i == first){ + reverse(first, last); + return false; + } + } + + + } + + template<class BidirectionalIterator> _UCXXEXPORT + bool prev_permutation(BidirectionalIterator first, BidirectionalIterator last) + { + less<typename iterator_traits<BidirectionalIterator>::value_type> c; + return prev_permutation(first, last, c); + } + + template<class BidirectionalIterator, class Compare> _UCXXEXPORT + bool prev_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp) + { + if(first == last){ + return false; // No data + } + BidirectionalIterator i = last; + --i; + if(i == first){ + return false; //Only one element + } + BidirectionalIterator ii = i; + --ii; + //If the last two items are in reverse order, swap them and call it done + if( comp(*i, *ii) ){ + iter_swap(ii, i); + return true; + } + + //Copied from GNU GCC header files version 3.4.2 + i = last; + --i; + + for(;;){ + ii = i; + --i; + if ( comp(*ii, *i)){ + BidirectionalIterator j = last; + --j; + while ( !comp(*j, *i)){ + --j; + } + iter_swap(i, j); + reverse(ii, last); + return true; + } + if (i == first){ + reverse(first, last); + return false; + } + } + + } + +} + +#pragma GCC visibility pop + +#endif + + + |