Implements a lightweight RNG based on XOR-shift operations. More...

Inheritance diagram for SST::RNG::XORShiftRNG:

Public Member Functions
	XORShiftRNG (unsigned int seed)
	Create a new Xorshift RNG with a specified seed. More...

	XORShiftRNG ()
	Creates a new Xorshift using a random seed which is obtained from the system clock. More...

double	nextUniform () override
	Generates the next random number as a double value between 0 and 1.

uint32_t	generateNextUInt32 () override
	Generates the next random number as an unsigned 32-bit integer.

uint64_t	generateNextUInt64 () override
	Generates the next random number as an unsigned 64-bit integer.

int64_t	generateNextInt64 () override
	Generates the next random number as a signed 64-bit integer.

int32_t	generateNextInt32 () override
	Generates the next random number as a signed 32-bit integer.

void	seed (uint64_t newSeed)
	Seed the XOR RNG.

	~XORShiftRNG ()
	Destructor for Xorshift.

void	serialize_order (SST::Core::Serialization::serializer &ser) override
	Serialization function for checkpoint.

Public Member Functions inherited from SST::RNG::Random
virtual	~Random ()
	Destroys the random number generator.

virtual void	serialize_order (SST::Core::Serialization::serializer &UNUSED(ser)) override

Public Member Functions inherited from SST::Core::Serialization::serializable_base
virtual const char *	cls_name () const =0

virtual uint32_t	cls_id () const =0

virtual std::string	serialization_name () const =0

Data Fields
ImplementSerializable(SST::RNG::XORShiftRNG) protected uint32_t	y
	Serialization macro.

uint32_t	z

uint32_t	w

Additional Inherited Members
Static Public Attributes inherited from SST::Core::Serialization::serializable
static constexpr uint32_t	NullClsId = std::numeric_limits<uint32_t>::max()

Static Public Attributes inherited from SST::Core::Serialization::serializable_base
static constexpr uint32_t	NullClsId = std::numeric_limits<uint32_t>::max()

Protected Types inherited from SST::Core::Serialization::serializable_base
enum	cxn_flag_t { ConstructorFlag }

Static Protected Member Functions inherited from SST::Core::Serialization::serializable_base
static void	serializable_abort (uint32_t line, const char file, const char func, const char *obj)

Detailed Description

Implements a lightweight RNG based on XOR-shift operations.

We utilize the XORSHIFT algorithm from: http://en.wikipedia.org/wiki/Xorshift. This is a very lightweight and inexpensive RNG.

Constructor & Destructor Documentation

XORShiftRNG::XORShiftRNG ( unsigned int seed )

Create a new Xorshift RNG with a specified seed.

Parameters

[in] seed The seed for this RNG

References seed().

XORShiftRNG::XORShiftRNG ( )

Creates a new Xorshift using a random seed which is obtained from the system clock.

Note this will give different results on different platforms and between runs.

References y.

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