src/main/cpp/numerics4cpp/statistics/distribution/discrete.h

00001 /*
00002  * Copyright (c) 2005, DoodleProject
00003  * All rights reserved.
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00005  * Redistribution and use in source and binary forms, with or without
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00007  * are met:
00008  * 
00009  * Redistributions of source code must retain the above copyright
00010  * notice, this list of conditions and the following disclaimer.
00011  * 
00012  * Redistributions in binary form must reproduce the above copyright
00013  * notice, this list of conditions and the following disclaimer in
00014  * the documentation and/or other materials provided with the
00015  * distribution.
00016  * 
00017  * Neither the name of DoodleProject nor the names of its contributors
00018  * may be used to endorse or promote products derived from this
00019  * software without specific prior written permission.
00020  * 
00021  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
00022  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
00023  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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00035 
00036 #ifndef _NUMERICS4CPP_STATISTICS_DISTRIBUTION_DISCRETE_H_
00037 #define _NUMERICS4CPP_STATISTICS_DISTRIBUTION_DISCRETE_H_
00038 
00039 #include "../../numerics.h"
00040 
00041 NUM_NAMESPACE_BEGIN
00042 
00046 class discrete_distribution {
00047 
00048 public:
00054         virtual double cdf(int x) const = 0;
00055         
00062         virtual int inverse_cdf(double p) const = 0;
00063 
00069         virtual double pmf(int x) const = 0;
00070         
00071 protected:
00081     int find_inverse_cdf(double p, int lower, int initial, int upper) const;
00082 
00090     double simple_cdf(int x0, int x1) const;
00091 };
00092 
00093 NUM_NAMESPACE_END
00094 
00095 #endif

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