| Geant4 Cross Reference |
1 // -*- C++ -*- 1
2 //
3 // -------------------------------------------
4 // HEP Random
5 // --- RandGaussQ ---
6 // class header file
7 // -------------------------------------------
8
9 // Class defining methods RandGaussQ, which is
10 // The user interface is identical; but RandGa
11 // accurate.
12
13 // ===========================================
14 // M. Fischler - Created: 24th Jan 2000
15 // M Fischler - put and get to/from strea
16 //
17 // ===========================================
18
19 #ifndef RandGaussQ_h
20 #define RandGaussQ_h 1
21
22 #include "CLHEP/Random/RandGauss.h"
23
24 namespace CLHEP {
25
26 /**
27 * @author
28 * @ingroup random
29 */
30 class RandGaussQ : public RandGauss {
31
32 public:
33
34 inline RandGaussQ ( HepRandomEngine& anEngin
35
36 inline RandGaussQ ( HepRandomEngine* anEngin
37
38 // These constructors should be used to inst
39 // distribution object defining a local engi
40 // The static generator will be skipped usin
41 // defined below.
42 // If the engine is passed by pointer the co
43 // will be deleted by the RandGaussQ destruc
44 // If the engine is passed by reference the
45 // will not be deleted by the RandGaussQ des
46
47 // Destructor
48 virtual ~RandGaussQ();
49
50 //
51 // Methods to generate Gaussian-distributed
52 //
53 // If a fast good engine takes 1 usec, Ran
54 // RandGaussQ::fire() adds only .4 usec.
55 //
56
57 // Static methods to shoot random values usi
58
59 static inline double shoot();
60
61 static inline double shoot( double mean, do
62
63 static void shootArray ( const int size, do
64 double mean=0.0, d
65
66 // Static methods to shoot random values us
67 // by-passing the static generator.
68
69 static inline double shoot( HepRandomEngine
70
71 static inline double shoot( HepRandomEngine
72 double mean,
73
74
75 static void shootArray ( HepRandomEngine* a
76 const int size,
77 double* vect, doub
78 double stdDev=1.0
79
80 // Instance methods using the localEngine t
81 // generator, and the default mean and stdD
82
83 inline double fire();
84
85 inline double fire ( double mean, double std
86
87 void fireArray ( const int size, double* ve
88 void fireArray ( const int size, double* ve
89 double mean, double stdDev
90
91 virtual double operator()();
92 virtual double operator()( double mean, doub
93
94 // Save and restore to/from streams
95
96 std::ostream & put ( std::ostream & os ) con
97 std::istream & get ( std::istream & is );
98
99 std::string name() const;
100 HepRandomEngine & engine();
101
102 static std::string distributionName() {retur
103 // Provides the name of this distribution cl
104
105
106 protected:
107
108 static double transformQuick (double r);
109 static double transformSmall (double r);
110
111 private:
112
113 // All the engine info, and the default mean
114 // base class.
115
116 };
117
118 } // namespace CLHEP
119
120 #include "CLHEP/Random/RandGaussQ.icc"
121
122 #endif
123