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 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: williamr@2: williamr@2: williamr@2: williamr@2: williamr@2: