rand.h

ucos操作系统下TCPIP实现代码

/*****************************************************************************
* RAND.h - Random number generator header file.
*
* Copyright (c) 1998 Global Election Systems Inc.
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice and the following disclaimer are included verbatim in any 
* distributions. No written agreement, license, or royalty fee is required
* for any of the authorized uses.
*
* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
* REVISION HISTORY
*
* 98-05-29 Guy Lancaster <[e-mail]>, Global Election Systems Inc.
*	Extracted from avos.
*****************************************************************************/

#ifndef RAND_H
#define RAND_H

/***********************
*** PUBLIC FUNCTIONS ***
***********************/
/*
 * Initialize Borland's random number generator.  This is a library function
 *	but we declare it here rather than including the entire header file
 *	for it.
 */
void srand(unsigned seed);

/*
 * Initialize the random number generator.
 */
void avRandomInit(void);

/*
 * Randomize our random seed value.  To be called for truely random events
 * such as user operations and network traffic.
 */
void avRandomize(void);

/*
 * Return a new random number.
 */
ULONG avRandom(void);


#endif