SUNphi::SFMTRandomGen Class Reference

SIMD Fast Mersenne Twister. More...

#include <SFMT.hpp>

Classes
union	w128_t
	128-bit data structure More...

Public Member Functions
void	periodCertification ()
	Certificate the period of 2^MEXP. More...
void	randomizeAll ()
	Generates a new state.
uint32_t	operator() ()
	Gets the next random number in the stream. More...
void	seed (const uint32_t &seed)
	Seed the state with a 32-bit integer seed.

Private Types
enum	LEFT_RIGHT_T { LEFT, RIGHT }
	Used to shift left or right.

Private Member Functions
template<LEFT_RIGHT_T LeftRight>
w128_t	shift128 (const w128_t &in, const int &shift)
	Emulates the SIMD implementation.
void	recursion (w128_t &r, w128_t &a, w128_t &b, w128_t &c, w128_t &d)
	Performs the recursion.

Private Attributes
w128_t	state [N]
	State array.
int	idx
	Counter to the 32-bit internal state array.

Static Private Attributes
static constexpr int	MEXP
	Exponent of the period. More...
static constexpr int	N
	Number of 128-bit words. More...
static constexpr int	N32
	Number of 32-bit words. More...

Detailed Description

SIMD Fast Mersenne Twister.

Definition at line 56 of file SFMT.hpp.

Member Function Documentation

uint32_t SUNphi::SFMTRandomGen::operator() ( )

inline

Gets the next random number in the stream.

Proxy to he first element of the state

Definition at line 270 of file SFMT.hpp.

void SUNphi::SFMTRandomGen::periodCertification ( )

inline

Certificate the period of 2^MEXP.

Check

Definition at line 187 of file SFMT.hpp.

Member Data Documentation

constexpr int SUNphi::SFMTRandomGen::MEXP

staticprivate

Initial value:

=
      19937

Exponent of the period.

Definition at line 113 of file SFMT.hpp.

constexpr int SUNphi::SFMTRandomGen::N

staticprivate

Initial value:

=
      MEXP/128+1

Number of 128-bit words.

Definition at line 117 of file SFMT.hpp.

constexpr int SUNphi::SFMTRandomGen::N32

staticprivate

Initial value:

=
      N*4

Number of 32-bit words.

Definition at line 121 of file SFMT.hpp.

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The documentation for this class was generated from the following file:

• include/random/SFMT.hpp