Portable random shuffle with a reproducible, platform-independent random sequence. More...

#include <OpenMS/MATH/MathFunctions.h>

Public Member Functions
	RandomShuffler ()=default
	Default constructor; the engine starts from its default seed.

	RandomShuffler (int seed)
	Constructor seeding the engine with `seed`.

template<class RandomAccessIterator >
void	portable_random_shuffle (RandomAccessIterator first, RandomAccessIterator last)

void	seed (uint64_t value)

Private Member Functions
std::ptrdiff_t	randomIndex_ (std::ptrdiff_t upper)
	A uniform index in [0, `upper`], drawn so that every platform gets the same one.

Private Attributes
std::mt19937_64	rng_

Detailed Description

Portable random shuffle with a reproducible, platform-independent random sequence.

The engine is the standard MT19937-64; the index distribution that makes the sequence platform-independent is drawn in the implementation. A copy continues the sequence independently of its source.

Constructor & Destructor Documentation

◆ RandomShuffler() [1/2]

RandomShuffler ( )

default

Default constructor; the engine starts from its default seed.

◆ RandomShuffler() [2/2]

RandomShuffler ( int seed )

inlineexplicit

Constructor seeding the engine with seed.

Member Function Documentation

◆ portable_random_shuffle()

template<class RandomAccessIterator >

void portable_random_shuffle	(	RandomAccessIterator	first,
		RandomAccessIterator	last
	)

inline

References first.

Referenced by RANSAC< TModelType >::ransac().

◆ randomIndex_()

std::ptrdiff_t randomIndex_ ( std::ptrdiff_t upper )

private

A uniform index in [0, upper], drawn so that every platform gets the same one.

◆ seed()

void seed ( uint64_t value )

inline

Referenced by RANSAC< TModelType >::setSeed().

Member Data Documentation

◆ rng_

std::mt19937_64 rng_