1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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.
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.
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.
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/.
34 typedef struct _GRand GRand;
36 /* GRand - a good and fast random number generator: Mersenne Twister
37 * see http://www.math.keio.ac.jp/~matumoto/emt.html for more info.
38 * The range functions return a value in the intervall [begin, end).
40 * int_range -> [begin..end-1]
42 * double_range -> [begin..end)
45 GRand* g_rand_new_with_seed (guint32 seed);
46 GRand* g_rand_new (void);
47 void g_rand_free (GRand *rand);
49 void g_rand_set_seed (GRand *rand,
52 #define g_rand_boolean(rand) (g_rand_int ((rand)) & (1<<15))
54 guint32 g_rand_int (GRand *rand);
55 gint32 g_rand_int_range (GRand *rand,
58 gdouble g_rand_double (GRand *rand);
59 gdouble g_rand_double_range (GRand *rand,
63 void g_random_set_seed (guint32 seed);
65 #define g_random_boolean() (g_rand_boolean ((rand)))
67 guint32 g_random_int (void);
68 gint32 g_random_int_range (gint32 begin,
70 gdouble g_random_double (void);
71 gdouble g_random_double_range (gdouble begin,
76 #endif /* __G_RAND_H__ */