Contiki 2.6
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00001 /* 00002 * Copyright (c) 2005, Swedish Institute of Computer Science 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * This file is part of the Contiki operating system. 00030 * 00031 * @(#)$Id: random.h,v 1.2 2010/12/13 16:52:02 dak664 Exp $ 00032 */ 00033 #ifndef __RANDOM_H__ 00034 #define __RANDOM_H__ 00035 00036 /* 00037 * Initialize the pseudo-random generator. 00038 * 00039 */ 00040 void random_init(unsigned short seed); 00041 00042 /* 00043 * Calculate a pseudo random number between 0 and 65535. 00044 * 00045 * \return A pseudo-random number between 0 and 65535. 00046 */ 00047 unsigned short random_rand(void); 00048 00049 /* In gcc int rand() uses RAND_MAX and long random() uses RANDOM_MAX */ 00050 /* Since random_rand casts to unsigned short, we'll use this maxmimum */ 00051 #define RANDOM_RAND_MAX 65535U 00052 00053 #endif /* __RANDOM_H__ */