| 1 | /* GLIB - Library of useful routines for C programming |
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| 2 | * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public |
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| 15 | * License along with this library; if not, write to the |
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| 16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 17 | * Boston, MA 02111-1307, USA. |
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| 18 | */ |
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| 19 | |
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| 20 | /* |
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| 21 | * Modified by the GLib Team and others 1997-2000. See the AUTHORS |
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| 22 | * file for a list of people on the GLib Team. See the ChangeLog |
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| 23 | * files for a list of changes. These files are distributed with |
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| 24 | * GLib at ftp://ftp.gtk.org/pub/gtk/. |
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| 25 | */ |
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| 26 | |
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| 27 | #ifndef __G_RAND_H__ |
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| 28 | #define __G_RAND_H__ |
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| 29 | |
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| 30 | #include <glib/gtypes.h> |
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| 31 | |
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| 32 | G_BEGIN_DECLS |
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| 33 | |
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| 34 | typedef struct _GRand GRand; |
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| 35 | |
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| 36 | /* GRand - a good and fast random number generator: Mersenne Twister |
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| 37 | * see http://www.math.keio.ac.jp/~matumoto/emt.html for more info. |
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| 38 | * The range functions return a value in the intervall [begin, end). |
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| 39 | * int -> [0..2^32-1] |
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| 40 | * int_range -> [begin..end-1] |
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| 41 | * double -> [0..1) |
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| 42 | * double_range -> [begin..end) |
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| 43 | */ |
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| 44 | |
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| 45 | GRand* g_rand_new_with_seed (guint32 seed); |
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| 46 | GRand* g_rand_new_with_seed_array (const guint32 *seed, |
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| 47 | guint seed_length); |
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| 48 | GRand* g_rand_new (void); |
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| 49 | void g_rand_free (GRand *rand_); |
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| 50 | GRand* g_rand_copy (GRand *rand_); |
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| 51 | void g_rand_set_seed (GRand *rand_, |
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| 52 | guint32 seed); |
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| 53 | void g_rand_set_seed_array (GRand *rand_, |
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| 54 | const guint32 *seed, |
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| 55 | guint seed_length); |
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| 56 | |
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| 57 | #define g_rand_boolean(rand_) ((g_rand_int (rand_) & (1 << 15)) != 0) |
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| 58 | |
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| 59 | guint32 g_rand_int (GRand *rand_); |
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| 60 | gint32 g_rand_int_range (GRand *rand_, |
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| 61 | gint32 begin, |
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| 62 | gint32 end); |
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| 63 | gdouble g_rand_double (GRand *rand_); |
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| 64 | gdouble g_rand_double_range (GRand *rand_, |
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| 65 | gdouble begin, |
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| 66 | gdouble end); |
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| 67 | void g_random_set_seed (guint32 seed); |
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| 68 | |
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| 69 | #define g_random_boolean() ((g_random_int () & (1 << 15)) != 0) |
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| 70 | |
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| 71 | guint32 g_random_int (void); |
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| 72 | gint32 g_random_int_range (gint32 begin, |
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| 73 | gint32 end); |
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| 74 | gdouble g_random_double (void); |
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| 75 | gdouble g_random_double_range (gdouble begin, |
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| 76 | gdouble end); |
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| 77 | |
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| 78 | |
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| 79 | G_END_DECLS |
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| 80 | |
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| 81 | #endif /* __G_RAND_H__ */ |
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| 82 | |
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| 83 | |
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| 84 | |
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| 85 | |
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| 86 | |
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| 87 | |
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