Crypto++
5.6.4
Free C++ class library of cryptographic schemes
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Mersenne Twister class for Monte-Carlo simulations. More...
Public Member Functions | |
MersenneTwister (unsigned long seed=S) | |
Construct a Mersenne Twister. More... | |
void | GenerateBlock (byte *output, size_t size) |
Generate random array of bytes. More... | |
word32 | GenerateWord32 (word32 min=0, word32 max=0xffffffffL) |
Generate a random 32-bit word in the range min to max, inclusive. More... | |
void | DiscardBytes (size_t n) |
Generate and discard n bytes. More... | |
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virtual void | IncorporateEntropy (const byte *input, size_t length) |
Update RNG state with additional unpredictable values. More... | |
virtual bool | CanIncorporateEntropy () const |
Determines if a generator can accept additional entropy. More... | |
virtual byte | GenerateByte () |
Generate new random byte and return it. More... | |
virtual unsigned int | GenerateBit () |
Generate new random bit and return it. More... | |
virtual void | GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length) |
Generate random bytes into a BufferedTransformation. More... | |
template<class IT > | |
void | Shuffle (IT begin, IT end) |
Randomly shuffle the specified array. More... | |
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Algorithm (bool checkSelfTestStatus=true) | |
Interface for all crypto algorithms. More... | |
virtual std::string | AlgorithmName () const |
Provides the name of this algorithm. More... | |
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virtual Clonable * | Clone () const |
Copies this object. More... | |
Mersenne Twister class for Monte-Carlo simulations.
K | Magic constant |
M | Period parameter |
N | Size of the state vector |
F | Multiplier constant |
S | Initial seed |
Provides the MersenneTwister implementation. The class is a header-only implementation.
Definition at line 31 of file mersenne.h.
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inline |
Construct a Mersenne Twister.
seed | 32-bit seed |
Defaults to template parameter S due to changing algorithm parameters over time
Definition at line 38 of file mersenne.h.
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inlinevirtual |
Generate random array of bytes.
output | byte buffer |
size | length of the buffer, in bytes |
Bytes are written to output in big endian order. If output length is not a multiple of word32, then unused bytes are not accumulated for subsequent calls to GenerateBlock. Rather, the unused tail bytes are discarded, and the stream is continued at the next word32 boundary from the state array.
Reimplemented from RandomNumberGenerator.
Definition at line 52 of file mersenne.h.
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inlinevirtual |
Generate a random 32-bit word in the range min to max, inclusive.
If the 32-bit candidate is not within the range, then it is discarded and a new candidate is used.
Reimplemented from RandomNumberGenerator.
Definition at line 98 of file mersenne.h.
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inlinevirtual |
Generate and discard n bytes.
n | the number of bytes to discard, rounded up to a word32 size |
If n is not a multiple of word32
, then unused bytes are not accumulated for subsequent calls to GenerateBlock. Rather, the unused tail bytes are discarded, and the stream is continued at the next word32
boundary from the state array.
Reimplemented from RandomNumberGenerator.
Definition at line 120 of file mersenne.h.