rack::random Namespace Reference

Random number generation. More...

Classes
struct	Xoroshiro128Plus
	xoroshiro128+. More...

Functions
void	init ()
	Initializes the thread-local RNG state. More...
Xoroshiro128Plus &	local ()
	Returns the thread-local generator. More...
template<typename T >
T	get ()
template<>
uint32_t	get ()
uint64_t	u64 ()
	Returns a uniform random uint64_t from 0 to UINT64_MAX. More...
uint32_t	u32 ()
	Returns a uniform random uint32_t from 0 to UINT32_MAX. More...
float	uniform ()
	Returns a uniform random float in the interval [0.0, 1.0) More...
float	normal ()
	Returns a normal random number with mean 0 and standard deviation 1. More...
void	buffer (uint8_t *out, size_t len)
	Fills an array with random bytes. More...
std::vector< uint8_t >	vector (size_t len)
	Creates a vector of random bytes. More...

Detailed Description

Random number generation.

Function Documentation

init()

void rack::random::init

(

)

Initializes the thread-local RNG state.

Must call when creating a thread, otherwise random state is undefined (might always return 0).

local()

Xoroshiro128Plus & rack::random::local

(

)

Returns the thread-local generator.

get() [1/2]

template<typename T >

T rack::random::get

(

)

get() [2/2]

template<>

double rack::random::get ( )

inline

u64()

uint64_t rack::random::u64 ( )

inline

Returns a uniform random uint64_t from 0 to UINT64_MAX.

u32()

uint32_t rack::random::u32 ( )

inline

Returns a uniform random uint32_t from 0 to UINT32_MAX.

uniform()

float rack::random::uniform ( )

inline

Returns a uniform random float in the interval [0.0, 1.0)

normal()

float rack::random::normal ( )

inline

Returns a normal random number with mean 0 and standard deviation 1.

buffer()

void rack::random::buffer ( uint8_t *  out, size_t  len  )

inline

Fills an array with random bytes.

vector()

std::vector< uint8_t > rack::random::vector ( size_t  len )

inline

Creates a vector of random bytes.