Geant4  10.03
G4UniformRandPool.hh
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30 // ------------------------------------------------------------
31 // GEANT 4 class header file
32 // ------------------------------------------------------------
33 // Class description:
34 //
35 //
36 
37 // ------------------------------------------------------------
38 #ifndef G4UNIFORMRANDPOOL_HH
39 #define G4UNIFORMRANDPOOL_HH
40 
41 #include <algorithm>
42 #include <assert.h>
43 
44 #include "G4Types.hh"
45 #include "Randomize.hh"
46 
47 #define G4UNIFORMRANDPOOL_DEFAULT_POOLSIZE 1024
48 #define G4UNIFORMRANDPOOL_TINY_POOLSIZE 128
49 #define G4UNIFORMRANDPOOL_SMALL_POOLSIZE 256
50 #define G4UNIFORMRANDPOOL_MEDIUM_POOLSIZE 512
51 #define G4UNIFORMRANDPOOL_LARGE_POOLSIZE 2048
52 #define G4UNIFORMRANDPOOL_HUGE_POOLSIZE 8192
53 
55 {
56  public:
57 
59  G4UniformRandPool( /*PoolSize_t&*/ G4int ps );
61 
62  void Resize( /*PoolSize_t*/ G4int newSize );
63  void GetMany( G4double* rnds , G4int howMany );
64  inline G4double GetOne();
65  inline /*PoolSize_t*/ G4int GetPoolSize() const;
66 
67  // These two static methods are used to
68  // simulate the calls of CLHEP::HepRandom
69  //
70  static G4double flat();
71  static void flatArray( G4int howmany, G4double* rnds );
72 
73  private:
74 
75  inline void Fill( G4int howmany );
76 
77  private:
78 
79  /*PoolSize_t*/ G4int size;
82 };
83 
85 {
86  // No more available numbers, re-fill
87  //
88  if ( currentIdx >= /*(unsigned int)*/size )
89  {
90  Fill(/*(unsigned int)*/size);
91  }
92 
93  return buffer[currentIdx++];
94 }
95 
96 inline /*PoolSize_t*/ G4int G4UniformRandPool::GetPoolSize() const
97 {
98  return size;
99 }
100 
101 inline void G4UniformRandPool::Fill( G4int howmany )
102 {
103  assert(howmany>0 && howmany <= size);
104 
105  // Fill buffer with random numbers
106  //
107  G4Random::getTheEngine()->flatArray(howmany,buffer);
108  currentIdx = 0;
109 }
110 
111 #endif
static G4double flat()
int G4int
Definition: G4Types.hh:78
void Fill(G4int howmany)
static void flatArray(G4int howmany, G4double *rnds)
void GetMany(G4double *rnds, G4int howMany)
G4int GetPoolSize() const
void Resize(G4int newSize)
double G4double
Definition: G4Types.hh:76
static constexpr double ps
Definition: G4SIunits.hh:172