Rcpp Version 0.12.12
rcauchy.h
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1 // -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
2 //
3 // rcauchy.h: Rcpp R/C++ interface class library --
4 //
5 // Copyright (C) 2010 - 2016 Douglas Bates, Dirk Eddelbuettel and Romain Francois
6 //
7 // This file is part of Rcpp.
8 //
9 // Rcpp is free software: you can redistribute it and/or modify it
10 // under the terms of the GNU General Public License as published by
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21 
22 #ifndef Rcpp__stats__random_rcauchy_h
23 #define Rcpp__stats__random_rcauchy_h
24 
25 namespace Rcpp {
26 namespace stats {
27 
28 class CauchyGenerator : public ::Rcpp::Generator<double> {
29 public:
30 
31  CauchyGenerator( double location_, double scale_) :
32  location(location_) , scale(scale_) {}
33 
34  inline double operator()() const {
35  return location + scale * ::tan(M_PI * unif_rand()) ;
36  }
37 
38 private:
39  double location, scale ;
40 };
41 
42 class CauchyGenerator_1 : public ::Rcpp::Generator<double> {
43 public:
44 
45  CauchyGenerator_1( double location_) :
46  location(location_){}
47 
48  inline double operator()() const {
49  return location + ::tan(M_PI * unif_rand()) ;
50  }
51 
52 private:
53  double location ;
54 };
55 
56 class CauchyGenerator_0 : public ::Rcpp::Generator<double> {
57 public:
58 
60 
61  inline double operator()() const {
62  return ::tan(M_PI * unif_rand()) ;
63  }
64 
65 };
66 
67 } // stats
68 } // Rcpp
69 
70 #endif
CauchyGenerator_1(double location_)
Definition: rcauchy.h:45
CauchyGenerator(double location_, double scale_)
Definition: rcauchy.h:31
double operator()() const
Definition: rcauchy.h:34
double unif_rand(void)
Definition: Rmath.h:31
Rcpp API.
Definition: algo.h:28
double operator()() const
Definition: rcauchy.h:48
double operator()() const
Definition: rcauchy.h:61