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- // Numeric functions implementation -*- C++ -*-
-
- // Copyright (C) 2001 Free Software Foundation, Inc.
- //
- // This file is part of the GNU ISO C++ Library. This library is free
- // software; you can redistribute it and/or modify it under the
- // terms of the GNU General Public License as published by the
- // Free Software Foundation; either version 2, 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 General Public License for more details.
-
- // You should have received a copy of the GNU General Public License along
- // with this library; see the file COPYING. If not, write to the Free
- // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- // USA.
-
- // As a special exception, you may use this file as part of a free software
- // library without restriction. Specifically, if other files instantiate
- // templates or use macros or inline functions from this file, or you compile
- // this file and link it with other files to produce an executable, this
- // file does not by itself cause the resulting executable to be covered by
- // the GNU General Public License. This exception does not however
- // invalidate any other reasons why the executable file might be covered by
- // the GNU General Public License.
-
- /*
- *
- * 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.
- *
- *
- * Copyright (c) 1996,1997
- * Silicon Graphics Computer Systems, Inc.
- *
- * 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. Silicon Graphics makes no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- */
-
- /** @file stl_numeric.h
- * This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
- */
-
- #ifndef _CPP_BITS_STL_NUMERIC_H
- #define _CPP_BITS_STL_NUMERIC_H 1
-
- namespace std
- {
-
- template<typename _InputIterator, typename _Tp>
- _Tp
- accumulate(_InputIterator __first, _InputIterator __last, _Tp __init)
- {
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator>)
-
- for ( ; __first != __last; ++__first)
- __init = __init + *__first;
- return __init;
- }
-
- template<typename _InputIterator, typename _Tp, typename _BinaryOperation>
- _Tp
- accumulate(_InputIterator __first, _InputIterator __last, _Tp __init,
- _BinaryOperation __binary_op)
- {
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator>)
-
- for ( ; __first != __last; ++__first)
- __init = __binary_op(__init, *__first);
- return __init;
- }
-
- template<typename _InputIterator1, typename _InputIterator2, typename _Tp>
- _Tp
- inner_product(_InputIterator1 __first1, _InputIterator1 __last1,
- _InputIterator2 __first2, _Tp __init)
- {
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator1>)
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator2>)
-
- for ( ; __first1 != __last1; ++__first1, ++__first2)
- __init = __init + (*__first1 * *__first2);
- return __init;
- }
-
- template<typename _InputIterator1, typename _InputIterator2, typename _Tp,
- typename _BinaryOperation1, typename _BinaryOperation2>
- _Tp
- inner_product(_InputIterator1 __first1, _InputIterator1 __last1,
- _InputIterator2 __first2, _Tp __init,
- _BinaryOperation1 __binary_op1,
- _BinaryOperation2 __binary_op2)
- {
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator1>)
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator2>)
-
- for ( ; __first1 != __last1; ++__first1, ++__first2)
- __init = __binary_op1(__init, __binary_op2(*__first1, *__first2));
- return __init;
- }
-
- template<typename _InputIterator, typename _OutputIterator>
- _OutputIterator
- partial_sum(_InputIterator __first, _InputIterator __last,
- _OutputIterator __result)
- {
- typedef typename iterator_traits<_InputIterator>::value_type _ValueType;
-
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator>)
- __glibcpp_function_requires(_OutputIteratorConcept<_OutputIterator, _ValueType>)
-
- if (__first == __last) return __result;
- *__result = *__first;
- _ValueType __value = *__first;
- while (++__first != __last) {
- __value = __value + *__first;
- *++__result = __value;
- }
- return ++__result;
- }
-
- template<typename _InputIterator, typename _OutputIterator, typename _BinaryOperation>
- _OutputIterator
- partial_sum(_InputIterator __first, _InputIterator __last,
- _OutputIterator __result, _BinaryOperation __binary_op)
- {
- typedef typename iterator_traits<_InputIterator>::value_type _ValueType;
-
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator>)
- __glibcpp_function_requires(_OutputIteratorConcept<_OutputIterator, _ValueType>)
-
- if (__first == __last) return __result;
- *__result = *__first;
- _ValueType __value = *__first;
- while (++__first != __last) {
- __value = __binary_op(__value, *__first);
- *++__result = __value;
- }
- return ++__result;
- }
-
- template<typename _InputIterator, typename _OutputIterator>
- _OutputIterator
- adjacent_difference(_InputIterator __first,
- _InputIterator __last, _OutputIterator __result)
- {
- typedef typename iterator_traits<_InputIterator>::value_type _ValueType;
-
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator>)
- __glibcpp_function_requires(_OutputIteratorConcept<_OutputIterator, _ValueType>)
-
- if (__first == __last) return __result;
- *__result = *__first;
- _ValueType __value = *__first;
- while (++__first != __last) {
- _ValueType __tmp = *__first;
- *++__result = __tmp - __value;
- __value = __tmp;
- }
- return ++__result;
- }
-
- template<typename _InputIterator, typename _OutputIterator, typename _BinaryOperation>
- _OutputIterator
- adjacent_difference(_InputIterator __first, _InputIterator __last,
- _OutputIterator __result, _BinaryOperation __binary_op)
- {
- typedef typename iterator_traits<_InputIterator>::value_type _ValueType;
-
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator>)
- __glibcpp_function_requires(_OutputIteratorConcept<_OutputIterator, _ValueType>)
-
- if (__first == __last) return __result;
- *__result = *__first;
- _ValueType __value = *__first;
- while (++__first != __last) {
- _ValueType __tmp = *__first;
- *++__result = __binary_op(__tmp, __value);
- __value = __tmp;
- }
- return ++__result;
- }
-
- } // namespace std
-
- #endif /* _CPP_BITS_STL_NUMERIC_H */
-
- // Local Variables:
- // mode:C++
- // End:
-