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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 <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)
*/
GRand* g_rand_new_with_seed (guint32 seed);
GRand* g_rand_new (void);
void g_rand_free (GRand *rand);
void g_rand_set_seed (GRand *rand,
guint32 seed);
#define g_rand_boolean(rand) ((g_rand_int (rand) & (1 << 15)) != 0)
guint32 g_rand_int (GRand *rand);
gint32 g_rand_int_range (GRand *rand,
gint32 begin,
gint32 end);
gdouble g_rand_double (GRand *rand);
gdouble g_rand_double_range (GRand *rand,
gdouble begin,
gdouble end);
void g_random_set_seed (guint32 seed);
#define g_random_boolean() ((g_random_int () & (1 << 15)) != 0)
guint32 g_random_int (void);
gint32 g_random_int_range (gint32 begin,
gint32 end);
gdouble g_random_double (void);
gdouble g_random_double_range (gdouble begin,
gdouble end);
G_END_DECLS
#endif /* __G_RAND_H__ */
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