gcc/libstdc++-v3/include/tr1/complex

// TR1 complex -*- C++ -*-

// Copyright (C) 2006, 2007, 2008, 2009 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 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// 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.

// 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 tr1/complex
 *  This is a TR1 C++ Library header. 
 */

#ifndef _GLIBCXX_TR1_COMPLEX
#define _GLIBCXX_TR1_COMPLEX 1

#pragma GCC system_header

#if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
#  error TR1 header cannot be included from C++0x header
#endif

#include <complex>

#if defined(_GLIBCXX_INCLUDE_AS_TR1)
#  include <tr1_impl/complex>
#else
#  define _GLIBCXX_INCLUDE_AS_TR1
#  define _GLIBCXX_BEGIN_NAMESPACE_TR1 namespace tr1 {
#  define _GLIBCXX_END_NAMESPACE_TR1 }
#  define _GLIBCXX_TR1 tr1::
#  include <tr1_impl/complex>
#  undef _GLIBCXX_TR1
#  undef _GLIBCXX_END_NAMESPACE_TR1
#  undef _GLIBCXX_BEGIN_NAMESPACE_TR1
#  undef _GLIBCXX_INCLUDE_AS_TR1
#endif

namespace std
{
namespace tr1
{
  using std::arg;
  using std::conj;
  using std::imag;
  using std::norm;
  using std::polar;

  template<typename _Tp, typename _Up>
    inline std::complex<typename __gnu_cxx::__promote_2<_Tp, _Up>::__type>
    polar(const _Tp& __rho, const _Up& __theta)
    {
      typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
      return std::polar(__type(__rho), __type(__theta));
    }

  using std::real;

  template<typename _Tp>
    inline std::complex<_Tp>
    pow(const std::complex<_Tp>& __x, const _Tp& __y)
    { return std::pow(__x, __y); }

  template<typename _Tp>
    inline std::complex<_Tp>
    pow(const _Tp& __x, const std::complex<_Tp>& __y)
    { return std::pow(__x, __y); }

  template<typename _Tp>
    inline std::complex<_Tp>
    pow(const std::complex<_Tp>& __x, const std::complex<_Tp>& __y)
    { return std::pow(__x, __y); }
}
}

#endif // _GLIBCXX_TR1_COMPLEX