gprimes.h

   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, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GLib Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GLib Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GLib at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #ifndef __G_PRIMES_H__
  28 #define __G_PRIMES_H__
  29
  30 #include <gtypes.h>
  31
  32 G_BEGIN_DECLS
  33
  34 /* Prime numbers.
  35  */
  36
  37 /* This function returns prime numbers spaced by approximately 1.5-2.0
  38  * and is for use in resizing data structures which prefer
  39  * prime-valued sizes.  The closest spaced prime function returns the
  40  * next largest prime, or the highest it knows about which is about
  41  * MAXINT/4.
  42  */
  43 guint      g_spaced_primes_closest (guint num) G_GNUC_CONST;
  44
  45 G_END_DECLS
  46
  47 #endif /* __G_PRIMES_H__ */