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- /*
- *
- * Copyright (c) 1994
- * Hewlett-Packard Company
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. Hewlett-Packard Company makes no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- */
-
- #ifndef ALGOBASE_H
- #define ALGOBASE_H
-
- #include <pair.h>
- #include <iterator.h>
-
- template <class ForwardIterator1, class ForwardIterator2, class T>
- inline void __iter_swap(ForwardIterator1 a, ForwardIterator2 b, T*) {
- T tmp = *a;
- *a = *b;
- *b = tmp;
- }
-
- template <class ForwardIterator1, class ForwardIterator2>
- inline void iter_swap(ForwardIterator1 a, ForwardIterator2 b) {
- __iter_swap(a, b, value_type(a));
- }
-
- template <class T>
- inline void swap(T& a, T& b) {
- T tmp = a;
- a = b;
- b = tmp;
- }
-
- template <class T>
- inline const T& min(const T& a, const T& b) {
- return b < a ? b : a;
- }
-
- template <class T, class Compare>
- inline const T& min(const T& a, const T& b, Compare comp) {
- return comp(b, a) ? b : a;
- }
-
- template <class T>
- inline const T& max(const T& a, const T& b) {
- return a < b ? b : a;
- }
-
- template <class T, class Compare>
- inline const T& max(const T& a, const T& b, Compare comp) {
- return comp(a, b) ? b : a;
- }
-
- template <class InputIterator, class Distance>
- void __distance(InputIterator first, InputIterator last, Distance& n,
- input_iterator_tag) {
- while (first != last) { ++first; ++n; }
- }
-
- template <class ForwardIterator, class Distance>
- void __distance(ForwardIterator first, ForwardIterator last, Distance& n,
- forward_iterator_tag) {
- while (first != last) { ++first; ++n; }
- }
-
- template <class BidirectionalIterator, class Distance>
- void __distance(BidirectionalIterator first, BidirectionalIterator last,
- Distance& n, bidirectional_iterator_tag) {
- while (first != last) { ++first; ++n; }
- }
-
- template <class RandomAccessIterator, class Distance>
- inline void __distance(RandomAccessIterator first, RandomAccessIterator last,
- Distance& n, random_access_iterator_tag) {
- n += last - first;
- }
-
- template <class InputIterator, class Distance>
- inline void distance(InputIterator first, InputIterator last, Distance& n) {
- __distance(first, last, n, iterator_category(first));
- }
-
- template <class InputIterator, class Distance>
- void __advance(InputIterator& i, Distance n, input_iterator_tag) {
- while (n--) ++i;
- }
-
- template <class ForwardIterator, class Distance>
- void __advance(ForwardIterator& i, Distance n, forward_iterator_tag) {
- while (n--) ++i;
- }
-
- template <class BidirectionalIterator, class Distance>
- void __advance(BidirectionalIterator& i, Distance n,
- bidirectional_iterator_tag) {
- if (n >= 0)
- while (n--) ++i;
- else
- while (n++) --i;
- }
-
- template <class RandomAccessIterator, class Distance>
- inline void __advance(RandomAccessIterator& i, Distance n,
- random_access_iterator_tag) {
- i += n;
- }
-
- template <class InputIterator, class Distance>
- inline void advance(InputIterator& i, Distance n) {
- __advance(i, n, iterator_category(i));
- }
-
- template <class ForwardIterator>
- void destroy(ForwardIterator first, ForwardIterator last) {
- while (first != last) {
- /* Borland bug */
- destroy(&*first);
- ++first;
- //destroy(&*first++);
- }
- }
-
- template <class InputIterator, class ForwardIterator>
- ForwardIterator uninitialized_copy(InputIterator first, InputIterator last,
- ForwardIterator result) {
- while (first != last) construct(&*result++, *first++);
- return result;
- }
-
- template <class ForwardIterator, class T>
- void uninitialized_fill(ForwardIterator first, ForwardIterator last,
- const T& x) {
- while (first != last) construct(&*first++, x);
- }
-
- template <class ForwardIterator, class Size, class T>
- ForwardIterator uninitialized_fill_n(ForwardIterator first, Size n,
- const T& x) {
- while (n--) construct(&*first++, x);
- return first;
- }
-
- template <class InputIterator, class OutputIterator>
- OutputIterator copy(InputIterator first, InputIterator last,
- OutputIterator result) {
- while (first != last) *result++ = *first++;
- return result;
- }
-
- template <class BidirectionalIterator1, class BidirectionalIterator2>
- BidirectionalIterator2 copy_backward(BidirectionalIterator1 first,
- BidirectionalIterator1 last,
- BidirectionalIterator2 result) {
- while (first != last) *--result = *--last;
- return result;
- }
-
- template <class ForwardIterator, class T>
- void fill(ForwardIterator first, ForwardIterator last, const T& value) {
- while (first != last) *first++ = value;
- }
-
- template <class OutputIterator, class Size, class T>
- OutputIterator fill_n(OutputIterator first, Size n, const T& value) {
- while (n-- > 0) *first++ = value;
- return first;
- }
-
- template <class InputIterator1, class InputIterator2>
- pair<InputIterator1, InputIterator2> mismatch(InputIterator1 first1,
- InputIterator1 last1,
- InputIterator2 first2) {
- while (first1 != last1 && *first1 == *first2) {
- ++first1;
- ++first2;
- }
- return pair<InputIterator1, InputIterator2>(first1, first2);
- }
-
- template <class InputIterator1, class InputIterator2, class BinaryPredicate>
- pair<InputIterator1, InputIterator2> mismatch(InputIterator1 first1,
- InputIterator1 last1,
- InputIterator2 first2,
- BinaryPredicate binary_pred) {
- while (first1 != last1 && binary_pred(*first1, *first2)) {
- ++first1;
- ++first2;
- }
- return pair<InputIterator1, InputIterator2>(first1, first2);
- }
-
- template <class InputIterator1, class InputIterator2>
- inline bool equal(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2) {
- return mismatch(first1, last1, first2).first == last1;
- }
-
- template <class InputIterator1, class InputIterator2, class BinaryPredicate>
- inline bool equal(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, BinaryPredicate binary_pred) {
- return mismatch(first1, last1, first2, binary_pred).first == last1;
- }
-
- template <class InputIterator1, class InputIterator2>
- bool lexicographical_compare(InputIterator1 first1, InputIterator1 last1,
- InputIterator2 first2, InputIterator2 last2) {
- while (first1 != last1 && first2 != last2) {
- if (*first1 < *first2) return true;
- if (*first2++ < *first1++) return false;
- }
- return first1 == last1 && first2 != last2;
- }
-
- template <class InputIterator1, class InputIterator2, class Compare>
- 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;
- }
- return first1 == last1 && first2 != last2;
- }
-
- #endif
-