/* GLIB - Library of useful routines for C programming

  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald

  * Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  *

  * This library is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public

  * License as published by the Free Software Foundation; either

  * version 2 of the License, or (at your option) any later version.

  *

  * This library is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU

  * Lesser General Public License for more details.

  *

  * You should have received a copy of the GNU Lesser General Public

  * License along with this library; if not, write to the

  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

  * Boston, MA 02111-1307, USA.

  */

 /*

  * Modified by the GLib Team and others 1997-2000.  See the AUTHORS

  * file for a list of people on the GLib Team.  See the ChangeLog

  * files for a list of changes.  These files are distributed with

  * GLib at ftp://ftp.gtk.org/pub/gtk/. 

  */

 #ifndef __G_RAND_H__

 #define __G_RAND_H__

 #include <_ansi.h>

 #include <glib/gtypes.h>

 G_BEGIN_DECLS

 typedef struct _GRand           GRand;

 /* GRand - a good and fast random number generator: Mersenne Twister

  * see http://www.math.keio.ac.jp/~matumoto/emt.html for more info.

  * The range functions return a value in the intervall [begin, end).

  * int          -> [0..2^32-1]

  * int_range    -> [begin..end-1]

  * double       -> [0..1)

  * double_range -> [begin..end)

  */

 IMPORT_C GRand*  g_rand_new_with_seed  (guint32  seed);

 IMPORT_C GRand*  g_rand_new_with_seed_array (const guint32 *seed,

 				    guint seed_length);

 IMPORT_C GRand*  g_rand_new            (void);

 IMPORT_C void    g_rand_free           (GRand   *rand_);

 IMPORT_C GRand*  g_rand_copy           (GRand   *rand_);

 IMPORT_C void    g_rand_set_seed       (GRand   *rand_,

 			       guint32  seed);

 IMPORT_C void	g_rand_set_seed_array (GRand   *rand_,

 			       const guint32 *seed,

 			       guint    seed_length);

 #define g_rand_boolean(rand_) ((g_rand_int (rand_) & (1 << 15)) != 0)

 IMPORT_C guint32 g_rand_int            (GRand   *rand_);

 IMPORT_C gint32  g_rand_int_range      (GRand   *rand_,

 			       gint32   begin,

 			       gint32   end);

 IMPORT_C gdouble g_rand_double         (GRand   *rand_);

 IMPORT_C gdouble g_rand_double_range   (GRand   *rand_,

 			       gdouble  begin,

 			       gdouble  end);

 IMPORT_C void    g_random_set_seed     (guint32  seed);

 #define g_random_boolean() ((g_random_int () & (1 << 15)) != 0)

 IMPORT_C guint32 g_random_int          (void);

 IMPORT_C gint32  g_random_int_range    (gint32   begin,

 			       gint32   end);

 IMPORT_C gdouble g_random_double       (void);

 IMPORT_C gdouble g_random_double_range (gdouble  begin,

 			       gdouble  end);

 G_END_DECLS

 #endif /* __G_RAND_H__ */