chebyshev::random::random_source Class Reference

A source of pseudorandom numbers. More...

#include <random.h>

Public Member Functions
	random_source (uint64_t seed)
	Construct a random engine with the given seed.
uint64_t	get_seed ()
	Get the seed used to generate the random source.
uint64_t	natural ()
	Generate a random natural number.
real_t	uniform (real_t a, real_t b)
	Generate a uniformly distributed random number.
template<typename Vector >
Vector &	uniform (Vector &x, real_t a, real_t b)
	Fill an already allocated vector with uniformly distributed numbers over the same interval.
template<typename Vector >
Vector &	uniform (Vector &x, const std::vector< prec::interval > intervals)
	Fill an already allocated vector with uniformly distributed numbers over different intervals.
real_t	gaussian (real_t mean, real_t sigma)
	Generate a Gaussian distributed random number.
template<typename Vector >
Vector &	gaussian (Vector &x, real_t mean, real_t sigma)
	Fill an already allocated vector with Gaussian distributed numbers with the same mean and standard deviation.
std::string	string (size_t length)
	Generate a random string made of human-readable ASCII characters.
std::string	string (size_t length, std::string alphabet)
	Generate a random string made of the elements of the given alphabet.
std::string	string (size_t length, std::vector< char > alphabet)
	Generate a random string made of the elements of the given alphabet.
template<typename T >
std::vector< T >	string (size_t length, std::vector< T > alphabet)
	Generate a random string made of the elements of the given alphabet, of arbitrary type.

Detailed Description

A source of pseudorandom numbers.

Can be automatically generated from a random_context by using get_rnd().

Member Function Documentation

gaussian() [1/2]

real_t chebyshev::random::random_source::gaussian ( real_t  mean, real_t  sigma  )

inline

Generate a Gaussian distributed random number.

Parameters

m	The mean of the distribution
s	The standard deviation of the distribution

Returns

A pseudorandom number Gaussian distributed.

gaussian() [2/2]

template<typename Vector >

Vector & chebyshev::random::random_source::gaussian ( Vector &  x, real_t  mean, real_t  sigma  )

inline

Fill an already allocated vector with Gaussian distributed numbers with the same mean and standard deviation.

Parameters

x	The already initialized vector to fill.
m	The mean of the distribution
s	The standard deviation of the distribution

Returns

A reference to the overwritten vector.

string() [1/4]

std::string chebyshev::random::random_source::string ( size_t  length )

inline

Generate a random string made of human-readable ASCII characters.

Parameters

length

The length of the string to generate

Returns

A string generated by choosing the elements of the alphabet with uniform probability.

string() [2/4]

std::string chebyshev::random::random_source::string ( size_t  length, std::string  alphabet  )

inline

Generate a random string made of the elements of the given alphabet.

Parameters

length	The length of the string to generate
alphabet	A string containing the elements of the alphabet.

Returns

A string generated by choosing the elements of the alphabet with uniform probability.

string() [3/4]

std::string chebyshev::random::random_source::string ( size_t  length, std::vector< char >  alphabet  )

inline

Generate a random string made of the elements of the given alphabet.

Parameters

length	The length of the string to generate.
alphabet	A vector containing the elements of the alphabet.

Returns

A string generated by choosing the elements of the alphabet with uniform probability.

string() [4/4]

template<typename T >

std::vector< T > chebyshev::random::random_source::string ( size_t  length, std::vector< T >  alphabet  )

inline

Generate a random string made of the elements of the given alphabet, of arbitrary type.

Parameters

length

The length of the string to generate

Returns

A vector generated by choosing the elements of the alphabet with uniform probability.

uniform() [1/3]

real_t chebyshev::random::random_source::uniform ( real_t  a, real_t  b  )

inline

Generate a uniformly distributed random number.

Parameters

a	The lower extreme of the interval
b	The upper extreme of the interval

Returns

A pseudorandom number uniformly distributed over (a, b).

uniform() [2/3]

template<typename Vector >

Vector & chebyshev::random::random_source::uniform ( Vector &  x, const std::vector< prec::interval >  intervals  )

inline

Fill an already allocated vector with uniformly distributed numbers over different intervals.

Parameters

x	The already initialized vector to fill.
intervals	The intervals to generate over.

Returns

A reference to the overwritten vector.

uniform() [3/3]

template<typename Vector >

Vector & chebyshev::random::random_source::uniform ( Vector &  x, real_t  a, real_t  b  )

inline

Fill an already allocated vector with uniformly distributed numbers over the same interval.

Parameters

x	The already initialized vector to fill.
a	The lower extreme of the interval
b	The upper extreme of the interval

Returns

A reference to the overwritten vector.

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

• core/random.h