// Numeric extensions -*- C++ -*-
-// Copyright (C) 2002 Free Software Foundation, Inc.
+// Copyright (C) 2002-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option)
+// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
/*
*
/** @file ext/numeric
* This file is a GNU extension to the Standard C++ Library (possibly
- * containing extensions from the HP/SGI STL subset). You should only
- * include this header if you are using GCC 3 or later.
+ * containing extensions from the HP/SGI STL subset).
*/
#ifndef _EXT_NUMERIC
-#define _EXT_NUMERIC
+#define _EXT_NUMERIC 1
#pragma GCC system_header
+
+#include <bits/requires_hosted.h> // GNU extensions are currently omitted
+
#include <bits/concept_check.h>
#include <numeric>
#include <ext/functional> // For identity_element
-namespace __gnu_cxx
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
// Returns __x ** __n, where __n >= 0. _Note that "multiplication"
// is required to be associative, but not necessarily commutative.
-
template<typename _Tp, typename _Integer, typename _MonoidOperation>
_Tp
__power(_Tp __x, _Integer __n, _MonoidOperation __monoid_op)
{
if (__n == 0)
return identity_element(__monoid_op);
- else {
- while ((__n & 1) == 0) {
+ else
+ {
+ while ((__n & 1) == 0)
+ {
+ __n >>= 1;
+ __x = __monoid_op(__x, __x);
+ }
+
+ _Tp __result = __x;
__n >>= 1;
- __x = __monoid_op(__x, __x);
+ while (__n != 0)
+ {
+ __x = __monoid_op(__x, __x);
+ if ((__n & 1) != 0)
+ __result = __monoid_op(__result, __x);
+ __n >>= 1;
+ }
+ return __result;
}
-
- _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<typename _Tp, typename _Integer>
__power(_Tp __x, _Integer __n)
{ return __power(__x, __n, std::multiplies<_Tp>()); }
+ /**
+ * This is an SGI extension.
+ * @ingroup SGIextensions
+ * @doctodo
+ */
// Alias for the internal name __power. Note that power is an extension,
// not part of the C++ standard.
-
template<typename _Tp, typename _Integer, typename _MonoidOperation>
inline _Tp
power(_Tp __x, _Integer __n, _MonoidOperation __monoid_op)
{ return __power(__x, __n, __monoid_op); }
+ /**
+ * This is an SGI extension.
+ * @ingroup SGIextensions
+ * @doctodo
+ */
template<typename _Tp, typename _Integer>
inline _Tp
power(_Tp __x, _Integer __n)
{ return __power(__x, __n); }
- // iota is not part of the C++ standard. It is an extension.
-
+#if __cplusplus >= 201103L
+ using std::iota;
+#else
+ /**
+ * This is an SGI extension.
+ * @ingroup SGIextensions
+ * @doctodo
+ */
+ // iota is not part of the standard until C++11. It is an extension.
template<typename _ForwardIter, typename _Tp>
- void
+ void
iota(_ForwardIter __first, _ForwardIter __last, _Tp __value)
{
// concept requirements
- __glibcpp_function_requires(_Mutable_ForwardIteratorConcept<_ForwardIter>)
- __glibcpp_function_requires(_ConvertibleConcept<_Tp,
+ __glibcxx_function_requires(_Mutable_ForwardIteratorConcept<_ForwardIter>)
+ __glibcxx_function_requires(_ConvertibleConcept<_Tp,
typename std::iterator_traits<_ForwardIter>::value_type>)
while (__first != __last)
*__first++ = __value++;
}
+#endif // C++11
-} // namespace __gnu_cxx
-
-#endif /* _EXT_NUMERIC */
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+#endif