/contrib/groff/src/libs/libgroff/hypot.cpp

https://bitbucket.org/freebsd/freebsd-head/ · C++ · 40 lines · 16 code · 6 blank · 18 comment · 3 complexity · 6e94ea6e83d711c44791d8ef3a3cc0bb MD5 · raw file

  1. /* Copyright (C) 2005 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If
  13. not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  14. Cambridge, MA 02139, USA. */
  15. #ifdef HAVE_CONFIG_H
  16. #include <config.h>
  17. #endif
  18. #include <math.h>
  19. #ifdef NEED_DECLARATION_HYPOT
  20. double hypot(double, double);
  21. #endif /* NEED_DECLARATION_HYPOT */
  22. double groff_hypot(double x, double y)
  23. {
  24. double result = hypot(x, y);
  25. #ifdef __INTERIX
  26. /* hypot() on Interix is broken */
  27. if (isnan(result) && !isnan(x) && !isnan(y))
  28. return 0.0;
  29. #endif
  30. return result;
  31. }