Alvaro Cassinelli / Mbed 2 deprecated laserUI

Laser Sensing Display for UI interfaces in the real world

Dependencies:   mbed

Fork of skinGames_forktest by Alvaro Cassinelli

EthernetNetIf/LPC1768/lwip/netif/ppp/randm.h@31:5f039cbddee8, 2012-09-23 (annotated)

Committer:
mbedalvaro
Date:
Sun Sep 23 10:11:43 2012 +0000
Revision:
31:5f039cbddee8
this is quite nice, but  I am going to make a deep modification of the bouncing principle: instead of depending on the penetration, it will just be a factor over the speed (perfect elastic bouncing being factorElastic=1, and perfectly absorption=0);

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedalvaro 31:5f039cbddee8 1 /*****************************************************************************
mbedalvaro 31:5f039cbddee8 2 * randm.h - Random number generator header file.
mbedalvaro 31:5f039cbddee8 3 *
mbedalvaro 31:5f039cbddee8 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
mbedalvaro 31:5f039cbddee8 5 * Copyright (c) 1998 Global Election Systems Inc.
mbedalvaro 31:5f039cbddee8 6 *
mbedalvaro 31:5f039cbddee8 7 * The authors hereby grant permission to use, copy, modify, distribute,
mbedalvaro 31:5f039cbddee8 8 * and license this software and its documentation for any purpose, provided
mbedalvaro 31:5f039cbddee8 9 * that existing copyright notices are retained in all copies and that this
mbedalvaro 31:5f039cbddee8 10 * notice and the following disclaimer are included verbatim in any
mbedalvaro 31:5f039cbddee8 11 * distributions. No written agreement, license, or royalty fee is required
mbedalvaro 31:5f039cbddee8 12 * for any of the authorized uses.
mbedalvaro 31:5f039cbddee8 13 *
mbedalvaro 31:5f039cbddee8 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
mbedalvaro 31:5f039cbddee8 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
mbedalvaro 31:5f039cbddee8 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
mbedalvaro 31:5f039cbddee8 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mbedalvaro 31:5f039cbddee8 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
mbedalvaro 31:5f039cbddee8 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
mbedalvaro 31:5f039cbddee8 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
mbedalvaro 31:5f039cbddee8 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbedalvaro 31:5f039cbddee8 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
mbedalvaro 31:5f039cbddee8 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbedalvaro 31:5f039cbddee8 24 *
mbedalvaro 31:5f039cbddee8 25 ******************************************************************************
mbedalvaro 31:5f039cbddee8 26 * REVISION HISTORY
mbedalvaro 31:5f039cbddee8 27 *
mbedalvaro 31:5f039cbddee8 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
mbedalvaro 31:5f039cbddee8 29 * Ported to lwIP.
mbedalvaro 31:5f039cbddee8 30 * 98-05-29 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
mbedalvaro 31:5f039cbddee8 31 * Extracted from avos.
mbedalvaro 31:5f039cbddee8 32 *****************************************************************************/
mbedalvaro 31:5f039cbddee8 33
mbedalvaro 31:5f039cbddee8 34 #ifndef RANDM_H
mbedalvaro 31:5f039cbddee8 35 #define RANDM_H
mbedalvaro 31:5f039cbddee8 36
mbedalvaro 31:5f039cbddee8 37 /***********************
mbedalvaro 31:5f039cbddee8 38 *** PUBLIC FUNCTIONS ***
mbedalvaro 31:5f039cbddee8 39 ***********************/
mbedalvaro 31:5f039cbddee8 40 /*
mbedalvaro 31:5f039cbddee8 41 * Initialize the random number generator.
mbedalvaro 31:5f039cbddee8 42 */
mbedalvaro 31:5f039cbddee8 43 void avRandomInit(void);
mbedalvaro 31:5f039cbddee8 44
mbedalvaro 31:5f039cbddee8 45 /*
mbedalvaro 31:5f039cbddee8 46 * Churn the randomness pool on a random event. Call this early and often
mbedalvaro 31:5f039cbddee8 47 * on random and semi-random system events to build randomness in time for
mbedalvaro 31:5f039cbddee8 48 * usage. For randomly timed events, pass a null pointer and a zero length
mbedalvaro 31:5f039cbddee8 49 * and this will use the system timer and other sources to add randomness.
mbedalvaro 31:5f039cbddee8 50 * If new random data is available, pass a pointer to that and it will be
mbedalvaro 31:5f039cbddee8 51 * included.
mbedalvaro 31:5f039cbddee8 52 */
mbedalvaro 31:5f039cbddee8 53 void avChurnRand(char *randData, u32_t randLen);
mbedalvaro 31:5f039cbddee8 54
mbedalvaro 31:5f039cbddee8 55 /*
mbedalvaro 31:5f039cbddee8 56 * Randomize our random seed value. To be called for truely random events
mbedalvaro 31:5f039cbddee8 57 * such as user operations and network traffic.
mbedalvaro 31:5f039cbddee8 58 */
mbedalvaro 31:5f039cbddee8 59 #if MD5_SUPPORT
mbedalvaro 31:5f039cbddee8 60 #define avRandomize() avChurnRand(NULL, 0)
mbedalvaro 31:5f039cbddee8 61 #else /* MD5_SUPPORT */
mbedalvaro 31:5f039cbddee8 62 void avRandomize(void);
mbedalvaro 31:5f039cbddee8 63 #endif /* MD5_SUPPORT */
mbedalvaro 31:5f039cbddee8 64
mbedalvaro 31:5f039cbddee8 65 /*
mbedalvaro 31:5f039cbddee8 66 * Use the random pool to generate random data. This degrades to pseudo
mbedalvaro 31:5f039cbddee8 67 * random when used faster than randomness is supplied using churnRand().
mbedalvaro 31:5f039cbddee8 68 * Thus it's important to make sure that the results of this are not
mbedalvaro 31:5f039cbddee8 69 * published directly because one could predict the next result to at
mbedalvaro 31:5f039cbddee8 70 * least some degree. Also, it's important to get a good seed before
mbedalvaro 31:5f039cbddee8 71 * the first use.
mbedalvaro 31:5f039cbddee8 72 */
mbedalvaro 31:5f039cbddee8 73 void avGenRand(char *buf, u32_t bufLen);
mbedalvaro 31:5f039cbddee8 74
mbedalvaro 31:5f039cbddee8 75 /*
mbedalvaro 31:5f039cbddee8 76 * Return a new random number.
mbedalvaro 31:5f039cbddee8 77 */
mbedalvaro 31:5f039cbddee8 78 u32_t avRandom(void);
mbedalvaro 31:5f039cbddee8 79
mbedalvaro 31:5f039cbddee8 80
mbedalvaro 31:5f039cbddee8 81 #endif /* RANDM_H */