rtprandom.h

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00001 /*
00002 
00003   This file is a part of JRTPLIB
00004   Copyright (c) 1999-2007 Jori Liesenborgs
00005 
00006   Contact: jori.liesenborgs@gmail.com
00007 
00008   This library was developed at the "Expertisecentrum Digitale Media"
00009   (http://www.edm.uhasselt.be), a research center of the Hasselt University
00010   (http://www.uhasselt.be). The library is based upon work done for 
00011   my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
00012 
00013   Permission is hereby granted, free of charge, to any person obtaining a
00014   copy of this software and associated documentation files (the "Software"),
00015   to deal in the Software without restriction, including without limitation
00016   the rights to use, copy, modify, merge, publish, distribute, sublicense,
00017   and/or sell copies of the Software, and to permit persons to whom the
00018   Software is furnished to do so, subject to the following conditions:
00019 
00020   The above copyright notice and this permission notice shall be included
00021   in all copies or substantial portions of the Software.
00022 
00023   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00024   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00025   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
00026   THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00027   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
00028   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
00029   IN THE SOFTWARE.
00030 
00031 */
00032 
00037 #ifndef RTPRANDOM_H
00038 
00039 #define RTPRANDOM_H
00040 
00041 #include "rtpconfig.h"
00042 #include "rtptypes.h"
00043 #include <stdlib.h>
00044 
00046 class RTPRandom
00047 {
00048 public:
00049         RTPRandom();
00050         ~RTPRandom();
00051 
00053         uint8_t GetRandom8();
00054 
00056         uint16_t GetRandom16();
00057 
00059         uint32_t GetRandom32();
00060 
00062         double GetRandomDouble();
00063 private:
00064 #if defined(RTP_SUPPORT_GNUDRAND)
00065         struct drand48_data drandbuffer;
00066 #elif defined(RTP_SUPPORT_RANDR)
00067         unsigned int state;
00068 #endif // RTP_SUPPORT_GNUDRAND
00069 };
00070 
00071 #endif // RTPRANDOM_H
00072 

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