blocxx
RandomNumber.hpp
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32
33
39#ifndef BLOCXX_RANDOMNUMBER_HPP_INCLUDE_GUARD_
40#define BLOCXX_RANDOMNUMBER_HPP_INCLUDE_GUARD_
41#include "blocxx/BLOCXX_config.h"
42#include "blocxx/Types.hpp"
43#include <stdlib.h> // for RAND_MAX
44
45namespace BLOCXX_NAMESPACE
46{
47
48class BLOCXX_COMMON_API RandomNumber
49{
50public:
51 // Precondition: lowVal < highVal
52 RandomNumber(Int32 lowVal = 0, Int32 highVal = RAND_MAX);
53 Int32 getNextNumber();
54
55public:
56 // This function can be called to control when the prng will be initialized.
57 // If it hasn't been previously called, it will be called the first time a RandomNumber instance is instantiated.
58 static void initRandomness();
59 static void saveRandomState();
60
61private:
62 Int32 m_lowVal;
63 Int32 m_highVal;
64};
65
66} // end namespace BLOCXX_NAMESPACE
67
68#endif
Taken from RFC 1321.