# cmath.tcc

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    00001 // -*- C++ -*- C math library.
    00002
    00003 // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009
    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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
    00018 // permissions described in the GCC Runtime Library Exception, version
    00019 // 3.1, as published by the Free Software Foundation.
    00020
    00021 // You should have received a copy of the GNU General Public License and
    00022 // a copy of the GCC Runtime Library Exception along with this program;
    00023 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    00024 // <http://www.gnu.org/licenses/>.
    00025
    00026 // This file was written by Gabriel Dos Reis <gdr@codesourcery.com>
    00027
    00028 /** @file cmath.tcc
    00029  *  This is a Standard C++ Library file.
    00030  */
    00031
    00032 #ifndef _GLIBCXX_CMATH_TCC
    00033 #define _GLIBCXX_CMATH_TCC 1
    00034
    00035 _GLIBCXX_BEGIN_NAMESPACE(std)
    00036
    00037   template<typename _Tp>
    00038     inline _Tp
    00039     __cmath_power(_Tp __x, unsigned int __n)
    00040     {
    00041       _Tp __y = __n % 2 ? __x : _Tp(1);
    00042
    00043       while (__n >>= 1)
    00044         {
    00045           __x = __x * __x;
    00046           if (__n % 2)
    00047             __y = __y * __x;
    00048         }
    00049
    00050       return __y;
    00051     }
    00052
    00053 _GLIBCXX_END_NAMESPACE
    00054
    00055 #endif