williamr@2: /* GLIB - Library of useful routines for C programming
williamr@2:  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
williamr@2:  * Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
williamr@2:  *
williamr@2:  * This library is free software; you can redistribute it and/or
williamr@2:  * modify it under the terms of the GNU Lesser General Public
williamr@2:  * License as published by the Free Software Foundation; either
williamr@2:  * version 2 of the License, or (at your option) any later version.
williamr@2:  *
williamr@2:  * This library is distributed in the hope that it will be useful,
williamr@2:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
williamr@2:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
williamr@2:  * Lesser General Public License for more details.
williamr@2:  *
williamr@2:  * You should have received a copy of the GNU Lesser General Public
williamr@2:  * License along with this library; if not, write to the
williamr@2:  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
williamr@2:  * Boston, MA 02111-1307, USA.
williamr@2:  */
williamr@2: 
williamr@2: /*
williamr@2:  * Modified by the GLib Team and others 1997-2000.  See the AUTHORS
williamr@2:  * file for a list of people on the GLib Team.  See the ChangeLog
williamr@2:  * files for a list of changes.  These files are distributed with
williamr@2:  * GLib at ftp://ftp.gtk.org/pub/gtk/. 
williamr@2:  */
williamr@2: 
williamr@2: #ifndef __G_RAND_H__
williamr@2: #define __G_RAND_H__
williamr@2: 
williamr@2: #include <_ansi.h>
williamr@2: #include <glib/gtypes.h>
williamr@2: 
williamr@2: G_BEGIN_DECLS
williamr@2: 
williamr@2: typedef struct _GRand           GRand;
williamr@2: 
williamr@2: /* GRand - a good and fast random number generator: Mersenne Twister
williamr@2:  * see http://www.math.keio.ac.jp/~matumoto/emt.html for more info.
williamr@2:  * The range functions return a value in the intervall [begin, end).
williamr@2:  * int          -> [0..2^32-1]
williamr@2:  * int_range    -> [begin..end-1]
williamr@2:  * double       -> [0..1)
williamr@2:  * double_range -> [begin..end)
williamr@2:  */
williamr@2: 
williamr@2: IMPORT_C GRand*  g_rand_new_with_seed  (guint32  seed);
williamr@2: IMPORT_C GRand*  g_rand_new_with_seed_array (const guint32 *seed,
williamr@2: 				    guint seed_length);
williamr@2: IMPORT_C GRand*  g_rand_new            (void);
williamr@2: IMPORT_C void    g_rand_free           (GRand   *rand_);
williamr@2: IMPORT_C GRand*  g_rand_copy           (GRand   *rand_);
williamr@2: IMPORT_C void    g_rand_set_seed       (GRand   *rand_,
williamr@2: 			       guint32  seed);
williamr@2: IMPORT_C void	g_rand_set_seed_array (GRand   *rand_,
williamr@2: 			       const guint32 *seed,
williamr@2: 			       guint    seed_length);
williamr@2: 
williamr@2: #define g_rand_boolean(rand_) ((g_rand_int (rand_) & (1 << 15)) != 0)
williamr@2: 
williamr@2: IMPORT_C guint32 g_rand_int            (GRand   *rand_);
williamr@2: IMPORT_C gint32  g_rand_int_range      (GRand   *rand_,
williamr@2: 			       gint32   begin,
williamr@2: 			       gint32   end);
williamr@2: IMPORT_C gdouble g_rand_double         (GRand   *rand_);
williamr@2: IMPORT_C gdouble g_rand_double_range   (GRand   *rand_,
williamr@2: 			       gdouble  begin,
williamr@2: 			       gdouble  end);
williamr@2: IMPORT_C void    g_random_set_seed     (guint32  seed);
williamr@2: 
williamr@2: #define g_random_boolean() ((g_random_int () & (1 << 15)) != 0)
williamr@2: 
williamr@2: IMPORT_C guint32 g_random_int          (void);
williamr@2: IMPORT_C gint32  g_random_int_range    (gint32   begin,
williamr@2: 			       gint32   end);
williamr@2: IMPORT_C gdouble g_random_double       (void);
williamr@2: IMPORT_C gdouble g_random_double_range (gdouble  begin,
williamr@2: 			       gdouble  end);
williamr@2: 
williamr@2: 
williamr@2: G_END_DECLS
williamr@2: 
williamr@2: #endif /* __G_RAND_H__ */
williamr@2: 
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