PX4-Autopilot/misc/uClibc++/include/uClibc++/numeric

/* 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 <basic_definitions>
#include <exception>

#ifndef __STD_NUMERIC_HEADER
#define __STD_NUMERIC_HEADER 1

#pragma GCC visibility push(default)

extern "C++"
{
namespace std
{
  template <class InputIterator, class T> _UCXXEXPORT 
    T accumulate(InputIterator first, InputIterator last, T init)
  {
    while (first != last)
    {
      init = init + *first;
      ++first;
    }

    return init;
  }

  template <class InputIterator, class T, class BinaryOperation> _UCXXEXPORT 
    T accumulate(InputIterator first, InputIterator last, T init, BinaryOperation binary_op)
  {
    while (first != last)
    {
      init = binary_op(init, *first);
      ++first;
    }

    return init;
  }

  template <class InputIterator1, class InputIterator2, class T> _UCXXEXPORT 
    T inner_product(InputIterator1 first1, InputIterator1 last1,
      InputIterator2 first2, T init)
  {
    while (first1 != last1)
    {
      init = init + *first1 * *first2;
      ++first1;
      ++first2;
    }

    return init;
  }

  template <class InputIterator1, class InputIterator2, class T,
    class BinaryOperation1, class BinaryOperation2> _UCXXEXPORT 
    T inner_product(InputIterator1 first1, InputIterator1 last1,
      InputIterator2 first2, T init,
      BinaryOperation1 binary_op1,
      BinaryOperation2 binary_op2)
  {
    while (first1 != last1)
    {
      init = binary_op1(init, binary_op2(*first1, *first2));
      ++first1;
      ++first2;
    }

    return init;
  }

  template <class InputIterator, class OutputIterator> _UCXXEXPORT 
    OutputIterator partial_sum(InputIterator first, InputIterator last,
    OutputIterator result)
  {
    OutputIterator temp(result);
    *result = *first;
    ++first;
    ++result;

    while (first != last)
    {
      *result = *first + *temp;
      temp = result;
      ++first;
      ++result;
    }

    return result;
  }

  template <class InputIterator, class OutputIterator, class BinaryOperation> _UCXXEXPORT 
    OutputIterator partial_sum(InputIterator first, InputIterator last,
    OutputIterator result, BinaryOperation binary_op)
  {
    OutputIterator temp(result);
    *result = *first;
    ++first;
    ++result;

    while(first != last)
    {
      *result = binary_op(*first, *temp);
      temp = result;
      ++first;
      ++result;
    }

    return result;
  }

  template <class InputIterator, class OutputIterator> _UCXXEXPORT 
    OutputIterator
    adjacent_difference(InputIterator first, InputIterator last,
      OutputIterator result)
  {
    OutputIterator temp(first);
    *result = *first;
    ++first;
    ++result;

    while(first != last)
    {
      *result = *first - *temp;
      temp = first;
      ++first;
      ++result;
    }

    return result;
  }


  template <class InputIterator, class OutputIterator, class BinaryOperation> _UCXXEXPORT 
    OutputIterator
    adjacent_difference(InputIterator first, InputIterator last,
      OutputIterator result, BinaryOperation binary_op)
  {
    OutputIterator temp(first);
    *result = *first;
    ++first;
    ++result;

    while(first != last)
    {
      *result = binary_op(*first, *temp);
      temp = first;
      ++first;
      ++result;
    }

    return result;
  }

} // namespace
} // extern "C++"

#pragma GCC visibility pop

#endif