cmath.tcc revision 97403 
1// -*- C++ -*- C math library.
2
3// Copyright (C) 2000 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30// This file was written by Gabriel Dos Reis <gdr@codesourcery.com>
31
32#ifndef _CPP_BITS_CMATH_TCC
33#define _CPP_BITS_CMATH_TCC 1
34
35namespace std 
36{
37  export template<typename _Tp>
38    _Tp
39    __cmath_power(_Tp __x, unsigned int __n)
40    {
41      _Tp __y = __n % 2 ? __x : 1;
42
43      while (__n >>= 1)
44        {
45          __x = __x * __x;
46          if (__n % 2)
47            __y = __y * __x;
48        }
49
50      return __y;
51    }
52}
53
54#endif
55