# cmath.tcc

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    00001 // -*- C++ -*- C math library.
    00002
    00003 // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
    00004 // Free Software Foundation, Inc.
    00005 //
    00006 // This file is part of the GNU ISO C++ Library.  This library is free
    00007 // software; you can redistribute it and/or modify it under the
    00008 // terms of the GNU General Public License as published by the
    00009 // Free Software Foundation; either version 2, or (at your option)
    00010 // any later version.
    00011
    00012 // This library is distributed in the hope that it will be useful,
    00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00015 // GNU General Public License for more details.
    00016
    00017 // You should have received a copy of the GNU General Public License
    00018 // along with this library; see the file COPYING.  If not, write to
    00019 // the Free Software Foundation, 51 Franklin Street, Fifth Floor,
    00020 // Boston, MA 02110-1301, USA.
    00021
    00022 // As a special exception, you may use this file as part of a free software
    00023 // library without restriction.  Specifically, if other files instantiate
    00024 // templates or use macros or inline functions from this file, or you compile
    00025 // this file and link it with other files to produce an executable, this
    00026 // file does not by itself cause the resulting executable to be covered by
    00027 // the GNU General Public License.  This exception does not however
    00028 // invalidate any other reasons why the executable file might be covered by
    00029 // the GNU General Public License.
    00030
    00031 // This file was written by Gabriel Dos Reis <gdr@codesourcery.com>
    00032
    00033 /** @file cmath.tcc
    00034  *  This is a Standard C++ Library file.
    00035  */
    00036
    00037 #ifndef _GLIBCXX_CMATH_TCC
    00038 #define _GLIBCXX_CMATH_TCC 1
    00039
    00040 _GLIBCXX_BEGIN_NAMESPACE(std)
    00041
    00042   template<typename _Tp>
    00043     inline _Tp
    00044     __cmath_power(_Tp __x, unsigned int __n)
    00045     {
    00046       _Tp __y = __n % 2 ? __x : _Tp(1);
    00047
    00048       while (__n >>= 1)
    00049         {
    00050           __x = __x * __x;
    00051           if (__n % 2)
    00052             __y = __y * __x;
    00053         }
    00054
    00055       return __y;
    00056     }
    00057
    00058 _GLIBCXX_END_NAMESPACE
    00059
    00060 #endif