cfloat 1.8 KB

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  1. // -*- C++ -*- forwarding header.
  2. // Copyright (C) 1997-2019 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/cfloat
  21. * This is a Standard C++ Library file. You should @c \#include this file
  22. * in your programs, rather than any of the @a *.h implementation files.
  23. *
  24. * This is the C++ version of the Standard C Library header @c float.h,
  25. * and its contents are (mostly) the same as that header, but are all
  26. * contained in the namespace @c std (except for names which are defined
  27. * as macros in C).
  28. */
  29. //
  30. // ISO C++ 14882: 18.2.2 Implementation properties: C library
  31. //
  32. #pragma GCC system_header
  33. #include <bits/c++config.h>
  34. #include <float.h>
  35. #ifndef _GLIBCXX_CFLOAT
  36. #define _GLIBCXX_CFLOAT 1
  37. #if __cplusplus >= 201103L
  38. # ifndef DECIMAL_DIG
  39. # define DECIMAL_DIG __DECIMAL_DIG__
  40. # endif
  41. # ifndef FLT_EVAL_METHOD
  42. # define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
  43. # endif
  44. #endif
  45. #endif