fenv.h 1.8 KB

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  1. // -*- C++ -*- compatibility header.
  2. // Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
  3. //
  4. // This file is part of the GNU ISO C++ Library. This library is free
  5. // software; you can redistribute it and/or modify it under the
  6. // terms of the GNU General Public License as published by the
  7. // Free Software Foundation; either version 3, or (at your option)
  8. // any later version.
  9. // This library is distributed in the hope that it will be useful,
  10. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. // GNU General Public License for more details.
  13. // Under Section 7 of GPL version 3, you are granted additional
  14. // permissions described in the GCC Runtime Library Exception, version
  15. // 3.1, as published by the Free Software Foundation.
  16. // You should have received a copy of the GNU General Public License and
  17. // a copy of the GCC Runtime Library Exception along with this program;
  18. // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
  19. // <http://www.gnu.org/licenses/>.
  20. /** @file fenv.h
  21. * This is a Standard C++ Library header.
  22. */
  23. #ifndef _GLIBCXX_FENV_H
  24. #define _GLIBCXX_FENV_H 1
  25. #pragma GCC system_header
  26. #include <bits/c++config.h>
  27. #if _GLIBCXX_HAVE_FENV_H
  28. # include_next <fenv.h>
  29. #endif
  30. #ifdef __GXX_EXPERIMENTAL_CXX0X__
  31. # if defined(_GLIBCXX_INCLUDE_AS_TR1)
  32. # error C++0x header cannot be included from TR1 header
  33. # endif
  34. # if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
  35. # include <tr1_impl/cfenv>
  36. # else
  37. # define _GLIBCXX_INCLUDE_AS_CXX0X
  38. # define _GLIBCXX_BEGIN_NAMESPACE_TR1
  39. # define _GLIBCXX_END_NAMESPACE_TR1
  40. # define _GLIBCXX_TR1
  41. # include <tr1_impl/cfenv>
  42. # undef _GLIBCXX_TR1
  43. # undef _GLIBCXX_END_NAMESPACE_TR1
  44. # undef _GLIBCXX_BEGIN_NAMESPACE_TR1
  45. # undef _GLIBCXX_INCLUDE_AS_CXX0X
  46. # endif
  47. #endif
  48. #endif // _GLIBCXX_FENV_H