LCOM1920-T02G10

// -*- C++ -*-

//===---------------------------- numeric ---------------------------------===//

//

//                     The LLVM Compiler Infrastructure

//

// This file is dual licensed under the MIT and the University of Illinois Open

// Source Licenses. See LICENSE.TXT for details.

//

//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_NUMERIC

#define _LIBCPP_NUMERIC

/*

    numeric synopsis

namespace std

{

template <class InputIterator, class T>

    T

    accumulate(InputIterator first, InputIterator last, T init);

template <class InputIterator, class T, class BinaryOperation>

    T

    accumulate(InputIterator first, InputIterator last, T init, BinaryOperation binary_op);

template <class InputIterator1, class InputIterator2, class T>

    T

    inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, T init);

template <class InputIterator1, class InputIterator2, class T, class BinaryOperation1, class BinaryOperation2>

    T

    inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,

                  T init, BinaryOperation1 binary_op1, BinaryOperation2 binary_op2);

template <class InputIterator, class OutputIterator>

    OutputIterator

    partial_sum(InputIterator first, InputIterator last, OutputIterator result);

template <class InputIterator, class OutputIterator, class BinaryOperation>

    OutputIterator

    partial_sum(InputIterator first, InputIterator last, OutputIterator result, BinaryOperation binary_op);

template <class InputIterator, class OutputIterator>

    OutputIterator

    adjacent_difference(InputIterator first, InputIterator last, OutputIterator result);

template <class InputIterator, class OutputIterator, class BinaryOperation>

    OutputIterator

    adjacent_difference(InputIterator first, InputIterator last, OutputIterator result, BinaryOperation binary_op);

template <class ForwardIterator, class T>

    void iota(ForwardIterator first, ForwardIterator last, T value);

}  // std

*/

#include <__config>

#include <iterator>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

#pragma GCC system_header

#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _InputIterator, class _Tp>

inline _LIBCPP_INLINE_VISIBILITY

_Tp

accumulate(_InputIterator __first, _InputIterator __last, _Tp __init)

{

    for (; __first != __last; ++__first)

        __init = __init + *__first;

    return __init;

}

template <class _InputIterator, class _Tp, class _BinaryOperation>

inline _LIBCPP_INLINE_VISIBILITY

_Tp

accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOperation __binary_op)

{

    for (; __first != __last; ++__first)

        __init = __binary_op(__init, *__first);

    return __init;

}

template <class _InputIterator1, class _InputIterator2, class _Tp>

inline _LIBCPP_INLINE_VISIBILITY

_Tp

inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init)

{

    for (; __first1 != __last1; ++__first1, (void) ++__first2)

        __init = __init + *__first1 * *__first2;

    return __init;

}

template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>

inline _LIBCPP_INLINE_VISIBILITY

_Tp

inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2,

              _Tp __init, _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2)

{

    for (; __first1 != __last1; ++__first1, (void) ++__first2)

        __init = __binary_op1(__init, __binary_op2(*__first1, *__first2));

    return __init;

}

template <class _InputIterator, class _OutputIterator>

inline _LIBCPP_INLINE_VISIBILITY

_OutputIterator

partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __result)

{

    if (__first != __last)

    {

        typename iterator_traits<_InputIterator>::value_type __t(*__first);

        *__result = __t;

        for (++__first, (void) ++__result; __first != __last; ++__first, (void) ++__result)

        {

            __t = __t + *__first;

            *__result = __t;

        }

    }

    return __result;

}

template <class _InputIterator, class _OutputIterator, class _BinaryOperation>

inline _LIBCPP_INLINE_VISIBILITY

_OutputIterator

partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __result,

              _BinaryOperation __binary_op)

{

    if (__first != __last)

    {

        typename iterator_traits<_InputIterator>::value_type __t(*__first);

        *__result = __t;

        for (++__first, (void) ++__result; __first != __last; ++__first, (void) ++__result)

        {

            __t = __binary_op(__t, *__first);

            *__result = __t;

        }

    }

    return __result;

}

template <class _InputIterator, class _OutputIterator>

inline _LIBCPP_INLINE_VISIBILITY

_OutputIterator

adjacent_difference(_InputIterator __first, _InputIterator __last, _OutputIterator __result)

{

    if (__first != __last)

    {

        typename iterator_traits<_InputIterator>::value_type __t1(*__first);

        *__result = __t1;

        for (++__first, (void) ++__result; __first != __last; ++__first, (void) ++__result)

        {

            typename iterator_traits<_InputIterator>::value_type __t2(*__first);

            *__result = __t2 - __t1;

            __t1 = _VSTD::move(__t2);

        }

    }

    return __result;

}

template <class _InputIterator, class _OutputIterator, class _BinaryOperation>

inline _LIBCPP_INLINE_VISIBILITY

_OutputIterator

adjacent_difference(_InputIterator __first, _InputIterator __last, _OutputIterator __result,

                      _BinaryOperation __binary_op)

{

    if (__first != __last)

    {

        typename iterator_traits<_InputIterator>::value_type __t1(*__first);

        *__result = __t1;

        for (++__first, (void) ++__result; __first != __last; ++__first, (void) ++__result)

        {

            typename iterator_traits<_InputIterator>::value_type __t2(*__first);

            *__result = __binary_op(__t2, __t1);

            __t1 = _VSTD::move(__t2);

        }

    }

    return __result;

}

template <class _ForwardIterator, class _Tp>

inline _LIBCPP_INLINE_VISIBILITY

void

iota(_ForwardIterator __first, _ForwardIterator __last, _Tp __value_)

{

    for (; __first != __last; ++__first, (void) ++__value_)

        *__first = __value_;

}

_LIBCPP_END_NAMESPACE_STD

#endif  // _LIBCPP_NUMERIC