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  • Committer: edam
  • Date: 2012-02-25 01:31:43 UTC
  • Revision ID: tim@ed.am-20120225013143-9fet2y2d3fjlrwez
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src/utility/numeric
 
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/*      Copyright (C) 2004 Garrett A. Kajmowicz
 
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        This file is part of the uClibc++ Library.
 
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        This library is free software; you can redistribute it and/or
 
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        modify it under the terms of the GNU Lesser General Public
 
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        License as published by the Free Software Foundation; either
 
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        version 2.1 of the License, or (at your option) any later version.
 
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        This library is distributed in the hope that it will be useful,
 
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        but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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        Lesser General Public License for more details.
 
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        You should have received a copy of the GNU Lesser General Public
 
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        License along with this library; if not, write to the Free Software
 
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        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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*/
 
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#include <basic_definitions>
 
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#include <exception>
 
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#ifndef __STD_NUMERIC_HEADER
 
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#define __STD_NUMERIC_HEADER 1
 
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#pragma GCC visibility push(default)
 
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namespace std{
 
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        template <class InputIterator, class T> _UCXXEXPORT 
 
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                T accumulate(InputIterator first, InputIterator last, T init)
 
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        {
 
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                while(first != last){
 
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                        init = init + *first;
 
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                        ++first;
 
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                }
 
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                return init;
 
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        }
 
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        template <class InputIterator, class T, class BinaryOperation> _UCXXEXPORT 
 
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                T accumulate(InputIterator first, InputIterator last, T init, BinaryOperation binary_op)
 
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        {
 
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                while(first != last){
 
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                        init = binary_op(init, *first);
 
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                        ++first;
 
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                }
 
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                return init;
 
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        }
 
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        template <class InputIterator1, class InputIterator2, class T> _UCXXEXPORT 
 
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                T inner_product(InputIterator1 first1, InputIterator1 last1,
 
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                        InputIterator2 first2, T init)
 
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        {
 
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                while(first1 != last1){
 
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                        init = init + *first1 * *first2;
 
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                        ++first1;
 
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                        ++first2;
 
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                }
 
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                return init;
 
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        }
 
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        template <class InputIterator1, class InputIterator2, class T,
 
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                class BinaryOperation1, class BinaryOperation2> _UCXXEXPORT 
 
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                T inner_product(InputIterator1 first1, InputIterator1 last1,
 
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                        InputIterator2 first2, T init,
 
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                        BinaryOperation1 binary_op1,
 
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                        BinaryOperation2 binary_op2)
 
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        {
 
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                while(first1 != last1){
 
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                        init = binary_op1(init, binary_op2(*first1, *first2));
 
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                        ++first1;
 
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                        ++first2;
 
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                }
 
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                return init;
 
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        }
 
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        template <class InputIterator, class OutputIterator> _UCXXEXPORT 
 
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                OutputIterator partial_sum(InputIterator first, InputIterator last,
 
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                OutputIterator result)
 
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        {
 
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                OutputIterator temp(result);
 
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                *result = *first;
 
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                ++first;
 
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                ++result;
 
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                while(first != last){
 
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                        *result = *first + *temp;
 
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                        temp = result;
 
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                        ++first;
 
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                        ++result;
 
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                }
 
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                return result;
 
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        }
 
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        template <class InputIterator, class OutputIterator, class BinaryOperation> _UCXXEXPORT 
 
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                OutputIterator partial_sum(InputIterator first, InputIterator last,
 
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                OutputIterator result, BinaryOperation binary_op)
 
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        {
 
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                OutputIterator temp(result);
 
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                *result = *first;
 
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                ++first;
 
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                ++result;
 
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                while(first != last){
 
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                        *result = binary_op(*first, *temp);
 
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                        temp = result;
 
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                        ++first;
 
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                        ++result;
 
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                }
 
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                return result;
 
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        }
 
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        template <class InputIterator, class OutputIterator> _UCXXEXPORT 
 
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                OutputIterator
 
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                adjacent_difference(InputIterator first, InputIterator last,
 
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                        OutputIterator result)
 
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        {
 
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                OutputIterator temp(first);
 
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                *result = *first;
 
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                ++first;
 
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                ++result;
 
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                while(first != last){
 
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                        *result = *first - *temp;
 
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                        temp = first;
 
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                        ++first;
 
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                        ++result;
 
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                }
 
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                return result;
 
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        }
 
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        template <class InputIterator, class OutputIterator, class BinaryOperation> _UCXXEXPORT 
 
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                OutputIterator
 
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                adjacent_difference(InputIterator first, InputIterator last,
 
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                        OutputIterator result, BinaryOperation binary_op)
 
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        {
 
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                OutputIterator temp(first);
 
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                *result = *first;
 
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                ++first;
 
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                ++result;
 
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                while(first != last){
 
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                        *result = binary_op(*first, *temp);
 
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                        temp = first;
 
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                        ++first;
 
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                        ++result;
 
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                }
 
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                return result;
 
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        }
 
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}
 
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#pragma GCC visibility pop
 
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#endif
 
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