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  1. // <cfenv> -*- C++ -*-
  2. // Copyright (C) 2007-2020 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 include/cfenv
  21. * This is a Standard C++ Library header.
  22. */
  23. #ifndef _GLIBCXX_CFENV
  24. #define _GLIBCXX_CFENV 1
  25. #pragma GCC system_header
  26. #if __cplusplus < 201103L
  27. # include <bits/c++0x_warning.h>
  28. #else
  29. #include <bits/c++config.h>
  30. #if _GLIBCXX_HAVE_FENV_H
  31. # include <fenv.h>
  32. #endif
  33. #ifdef _GLIBCXX_USE_C99_FENV_TR1
  34. #undef feclearexcept
  35. #undef fegetexceptflag
  36. #undef feraiseexcept
  37. #undef fesetexceptflag
  38. #undef fetestexcept
  39. #undef fegetround
  40. #undef fesetround
  41. #undef fegetenv
  42. #undef feholdexcept
  43. #undef fesetenv
  44. #undef feupdateenv
  45. namespace std
  46. {
  47. // types
  48. using ::fenv_t;
  49. using ::fexcept_t;
  50. // functions
  51. using ::feclearexcept;
  52. using ::fegetexceptflag;
  53. using ::feraiseexcept;
  54. using ::fesetexceptflag;
  55. using ::fetestexcept;
  56. using ::fegetround;
  57. using ::fesetround;
  58. using ::fegetenv;
  59. using ::feholdexcept;
  60. using ::fesetenv;
  61. using ::feupdateenv;
  62. } // namespace std
  63. #endif // _GLIBCXX_USE_C99_FENV_TR1
  64. #endif // C++11
  65. #endif // _GLIBCXX_CFENV