gprimes.h 1.7 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950
  1. /* GLIB - Library of useful routines for C programming
  2. * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
  3. *
  4. * This library is free software; you can redistribute it and/or
  5. * modify it under the terms of the GNU Lesser General Public
  6. * License as published by the Free Software Foundation; either
  7. * version 2 of the License, or (at your option) any later version.
  8. *
  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 GNU
  12. * Lesser General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU Lesser General Public
  15. * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16. */
  17. /*
  18. * Modified by the GLib Team and others 1997-2000. See the AUTHORS
  19. * file for a list of people on the GLib Team. See the ChangeLog
  20. * files for a list of changes. These files are distributed with
  21. * GLib at ftp://ftp.gtk.org/pub/gtk/.
  22. */
  23. #ifndef __G_PRIMES_H__
  24. #define __G_PRIMES_H__
  25. #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  26. #error "Only <glib.h> can be included directly."
  27. #endif
  28. #include <glib/gtypes.h>
  29. G_BEGIN_DECLS
  30. /* Prime numbers.
  31. */
  32. /* This function returns prime numbers spaced by approximately 1.5-2.0
  33. * and is for use in resizing data structures which prefer
  34. * prime-valued sizes. The closest spaced prime function returns the
  35. * next largest prime, or the highest it knows about which is about
  36. * MAXINT/4.
  37. */
  38. GLIB_AVAILABLE_IN_ALL
  39. guint g_spaced_primes_closest (guint num) G_GNUC_CONST;
  40. G_END_DECLS
  41. #endif /* __G_PRIMES_H__ */