mirror of git://gcc.gnu.org/git/gcc.git
257 lines
7.9 KiB
C++
257 lines
7.9 KiB
C++
/*
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/* NOTE: This is an internal header file, included by other STL 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 <class _InputIterator, class _Tp>
|
|
_Tp accumulate(_InputIterator __first, _InputIterator __last, _Tp __init)
|
|
{
|
|
__STL_REQUIRES(_InputIterator, _InputIterator);
|
|
for ( ; __first != __last; ++__first)
|
|
__init = __init + *__first;
|
|
return __init;
|
|
}
|
|
|
|
template <class _InputIterator, class _Tp, class _BinaryOperation>
|
|
_Tp accumulate(_InputIterator __first, _InputIterator __last, _Tp __init,
|
|
_BinaryOperation __binary_op)
|
|
{
|
|
__STL_REQUIRES(_InputIterator, _InputIterator);
|
|
for ( ; __first != __last; ++__first)
|
|
__init = __binary_op(__init, *__first);
|
|
return __init;
|
|
}
|
|
|
|
template <class _InputIterator1, class _InputIterator2, class _Tp>
|
|
_Tp inner_product(_InputIterator1 __first1, _InputIterator1 __last1,
|
|
_InputIterator2 __first2, _Tp __init)
|
|
{
|
|
__STL_REQUIRES(_InputIterator2, _InputIterator);
|
|
__STL_REQUIRES(_InputIterator2, _InputIterator);
|
|
for ( ; __first1 != __last1; ++__first1, ++__first2)
|
|
__init = __init + (*__first1 * *__first2);
|
|
return __init;
|
|
}
|
|
|
|
template <class _InputIterator1, class _InputIterator2, class _Tp,
|
|
class _BinaryOperation1, class _BinaryOperation2>
|
|
_Tp inner_product(_InputIterator1 __first1, _InputIterator1 __last1,
|
|
_InputIterator2 __first2, _Tp __init,
|
|
_BinaryOperation1 __binary_op1,
|
|
_BinaryOperation2 __binary_op2)
|
|
{
|
|
__STL_REQUIRES(_InputIterator2, _InputIterator);
|
|
__STL_REQUIRES(_InputIterator2, _InputIterator);
|
|
for ( ; __first1 != __last1; ++__first1, ++__first2)
|
|
__init = __binary_op1(__init, __binary_op2(*__first1, *__first2));
|
|
return __init;
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator, class _Tp>
|
|
_OutputIterator
|
|
__partial_sum(_InputIterator __first, _InputIterator __last,
|
|
_OutputIterator __result, _Tp*)
|
|
{
|
|
_Tp __value = *__first;
|
|
while (++__first != __last) {
|
|
__value = __value + *__first;
|
|
*++__result = __value;
|
|
}
|
|
return ++__result;
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator>
|
|
_OutputIterator
|
|
partial_sum(_InputIterator __first, _InputIterator __last,
|
|
_OutputIterator __result)
|
|
{
|
|
__STL_REQUIRES(_InputIterator, _InputIterator);
|
|
__STL_REQUIRES(_OutputIterator, _OutputIterator);
|
|
if (__first == __last) return __result;
|
|
*__result = *__first;
|
|
return __partial_sum(__first, __last, __result, __VALUE_TYPE(__first));
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator, class _Tp,
|
|
class _BinaryOperation>
|
|
_OutputIterator
|
|
__partial_sum(_InputIterator __first, _InputIterator __last,
|
|
_OutputIterator __result, _Tp*, _BinaryOperation __binary_op)
|
|
{
|
|
_Tp __value = *__first;
|
|
while (++__first != __last) {
|
|
__value = __binary_op(__value, *__first);
|
|
*++__result = __value;
|
|
}
|
|
return ++__result;
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator, class _BinaryOperation>
|
|
_OutputIterator
|
|
partial_sum(_InputIterator __first, _InputIterator __last,
|
|
_OutputIterator __result, _BinaryOperation __binary_op)
|
|
{
|
|
__STL_REQUIRES(_InputIterator, _InputIterator);
|
|
__STL_REQUIRES(_OutputIterator, _OutputIterator);
|
|
if (__first == __last) return __result;
|
|
*__result = *__first;
|
|
return __partial_sum(__first, __last, __result, __VALUE_TYPE(__first),
|
|
__binary_op);
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator, class _Tp>
|
|
_OutputIterator
|
|
__adjacent_difference(_InputIterator __first, _InputIterator __last,
|
|
_OutputIterator __result, _Tp*)
|
|
{
|
|
_Tp __value = *__first;
|
|
while (++__first != __last) {
|
|
_Tp __tmp = *__first;
|
|
*++__result = __tmp - __value;
|
|
__value = __tmp;
|
|
}
|
|
return ++__result;
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator>
|
|
_OutputIterator
|
|
adjacent_difference(_InputIterator __first,
|
|
_InputIterator __last, _OutputIterator __result)
|
|
{
|
|
__STL_REQUIRES(_InputIterator, _InputIterator);
|
|
__STL_REQUIRES(_OutputIterator, _OutputIterator);
|
|
if (__first == __last) return __result;
|
|
*__result = *__first;
|
|
return __adjacent_difference(__first, __last, __result,
|
|
__VALUE_TYPE(__first));
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator, class _Tp,
|
|
class _BinaryOperation>
|
|
_OutputIterator
|
|
__adjacent_difference(_InputIterator __first, _InputIterator __last,
|
|
_OutputIterator __result, _Tp*,
|
|
_BinaryOperation __binary_op) {
|
|
_Tp __value = *__first;
|
|
while (++__first != __last) {
|
|
_Tp __tmp = *__first;
|
|
*++__result = __binary_op(__tmp, __value);
|
|
__value = __tmp;
|
|
}
|
|
return ++__result;
|
|
}
|
|
|
|
template <class _InputIterator, class _OutputIterator, class _BinaryOperation>
|
|
_OutputIterator
|
|
adjacent_difference(_InputIterator __first, _InputIterator __last,
|
|
_OutputIterator __result, _BinaryOperation __binary_op)
|
|
{
|
|
__STL_REQUIRES(_InputIterator, _InputIterator);
|
|
__STL_REQUIRES(_OutputIterator, _OutputIterator);
|
|
if (__first == __last) return __result;
|
|
*__result = *__first;
|
|
return __adjacent_difference(__first, __last, __result,
|
|
__VALUE_TYPE(__first),
|
|
__binary_op);
|
|
}
|
|
|
|
// Returns __x ** __n, where __n >= 0. _Note that "multiplication"
|
|
// is required to be associative, but not necessarily commutative.
|
|
|
|
|
|
template <class _Tp, class _Integer, class _MonoidOperation>
|
|
_Tp __power(_Tp __x, _Integer __n, _MonoidOperation __monoid_op)
|
|
{
|
|
if (__n == 0)
|
|
return identity_element(__monoid_op);
|
|
else {
|
|
while ((__n & 1) == 0) {
|
|
__n >>= 1;
|
|
__x = __monoid_op(__x, __x);
|
|
}
|
|
|
|
_Tp __result = __x;
|
|
__n >>= 1;
|
|
while (__n != 0) {
|
|
__x = __monoid_op(__x, __x);
|
|
if ((__n & 1) != 0)
|
|
__result = __monoid_op(__result, __x);
|
|
__n >>= 1;
|
|
}
|
|
return __result;
|
|
}
|
|
}
|
|
|
|
template <class _Tp, class _Integer>
|
|
inline _Tp __power(_Tp __x, _Integer __n)
|
|
{
|
|
return __power(__x, __n, multiplies<_Tp>());
|
|
}
|
|
|
|
// Alias for the internal name __power. Note that power is an extension,
|
|
// not part of the C++ standard.
|
|
|
|
template <class _Tp, class _Integer, class _MonoidOperation>
|
|
inline _Tp power(_Tp __x, _Integer __n, _MonoidOperation __monoid_op)
|
|
{
|
|
return __power(__x, __n, __monoid_op);
|
|
}
|
|
|
|
template <class _Tp, class _Integer>
|
|
inline _Tp power(_Tp __x, _Integer __n)
|
|
{
|
|
return __power(__x, __n);
|
|
}
|
|
|
|
// iota is not part of the C++ standard. It is an extension.
|
|
|
|
template <class _ForwardIter, class _Tp>
|
|
void
|
|
iota(_ForwardIter __first, _ForwardIter __last, _Tp __value)
|
|
{
|
|
__STL_REQUIRES(_ForwardIter, _Mutable_ForwardIterator);
|
|
__STL_CONVERTIBLE(_Tp, typename iterator_traits<_ForwardIter>::value_type);
|
|
while (__first != __last)
|
|
*__first++ = __value++;
|
|
}
|
|
|
|
} // namespace std
|
|
|
|
#endif /* _CPP_BITS_STL_NUMERIC_H */
|
|
|
|
// Local Variables:
|
|
// mode:C++
|
|
// End:
|