williamr@2: /*
williamr@2:  *
williamr@2:  *
williamr@2:  * Copyright (c) 1994
williamr@2:  * Hewlett-Packard Company
williamr@2:  *
williamr@2:  * Copyright (c) 1996,1997
williamr@2:  * Silicon Graphics Computer Systems, Inc.
williamr@2:  *
williamr@2:  * Copyright (c) 1997
williamr@2:  * Moscow Center for SPARC Technology
williamr@2:  *
williamr@2:  * Copyright (c) 1999 
williamr@2:  * Boris Fomitchev
williamr@2:  *
williamr@2:  * This material is provided "as is", with absolutely no warranty expressed
williamr@2:  * or implied. Any use is at your own risk.
williamr@2:  *
williamr@2:  * Permission to use or copy this software for any purpose is hereby granted 
williamr@2:  * without fee, provided the above notices are retained on all copies.
williamr@2:  * Permission to modify the code and to distribute modified code is granted,
williamr@2:  * provided the above notices are retained, and a notice that the code was
williamr@2:  * modified is included with the above copyright notice.
williamr@2:  *
williamr@2:  */
williamr@2: #ifndef _STLP_NUMERIC_C
williamr@2: #define _STLP_NUMERIC_C
williamr@2: 
williamr@2: #ifndef _STLP_INTERNAL_NUMERIC_H
williamr@2: # include <stl/_numeric.h>
williamr@2: #endif
williamr@2: 
williamr@2: _STLP_BEGIN_NAMESPACE
williamr@2: 
williamr@2: template <class _InputIterator, class _OutputIterator, class _Tp,
williamr@2:           class _BinaryOperation>
williamr@2: _OutputIterator 
williamr@2: __partial_sum(_InputIterator __first, _InputIterator __last, 
williamr@2:               _OutputIterator __result, _Tp*, _BinaryOperation __binary_op)
williamr@2: {
williamr@2:   _STLP_DEBUG_CHECK(__check_range(__first, __last))
williamr@2:   if (__first == __last) return __result;
williamr@2:   *__result = *__first;
williamr@2: 
williamr@2:   _Tp __val = *__first;
williamr@2:   while (++__first != __last) {
williamr@2:     __val = __binary_op(__val, *__first);
williamr@2:     *++__result = __val;
williamr@2:   }
williamr@2:   return ++__result;
williamr@2: }
williamr@2: 
williamr@2: template <class _InputIterator, class _OutputIterator, class _Tp, 
williamr@2:           class _BinaryOperation>
williamr@2: _OutputIterator
williamr@2: __adjacent_difference(_InputIterator __first, _InputIterator __last, 
williamr@2:                       _OutputIterator __result, _Tp*,
williamr@2:                       _BinaryOperation __binary_op) {
williamr@2:   _STLP_DEBUG_CHECK(__check_range(__first, __last))
williamr@2:   if (__first == __last) return __result;
williamr@2:   *__result = *__first;
williamr@2:   _Tp __val = *__first;
williamr@2:   while (++__first != __last) {
williamr@2:     _Tp __tmp = *__first;
williamr@2:     *++__result = __binary_op(__tmp, __val);
williamr@2:     __val = __tmp;
williamr@2:   }
williamr@2:   return ++__result;
williamr@2: }
williamr@2: 
williamr@2: 
williamr@2: template <class _Tp, class _Integer, class _MonoidOperation>
williamr@2: _Tp __power(_Tp __x, _Integer __n, _MonoidOperation __opr) 
williamr@2: {
williamr@2:   _STLP_MPWFIX_TRY
williamr@2:   if (__n == 0)
williamr@2:     return __identity_element(__opr);
williamr@2:   else {
williamr@2:     while ((__n & 1) == 0) {
williamr@2:       __n >>= 1;
williamr@2:       __x = __opr(__x, __x);
williamr@2:     }
williamr@2:     _Tp __result = __x;
williamr@2: 	_STLP_MPWFIX_TRY
williamr@2:     __n >>= 1;
williamr@2:     while (__n != 0) {
williamr@2:       __x = __opr(__x, __x);
williamr@2:       if ((__n & 1) != 0)
williamr@2:         __result = __opr(__result, __x);
williamr@2:       __n >>= 1;
williamr@2:     }
williamr@2:     return __result;
williamr@2: 	_STLP_MPWFIX_CATCH
williamr@2:   }
williamr@2:   _STLP_MPWFIX_CATCH_ACTION(__x = _Tp())
williamr@2: }
williamr@2: 
williamr@2: _STLP_END_NAMESPACE
williamr@2: 
williamr@2: #endif /*  _STLP_NUMERIC_C */
williamr@2: 
williamr@2: // Local Variables:
williamr@2: // mode:C++
williamr@2: // End: