#include <cRandom.h>

Inheritance diagram for Gray::cRandomDef:

Public Member Functions
	cRandomDef (SEED_t nSeed=1)

virtual	~cRandomDef ()

SEED_t	GetRandNext ()

virtual void	InitSeed (const void *pData, size_t iSize) override

virtual UINT	GetRandUX (UINT nScale) override

Public Member Functions inherited from Gray::cRandomBase
	cRandomBase () noexcept

virtual	~cRandomBase ()

void	InitSeed (IRandomNoise *pSrc, size_t iSize)
	the default random number generator. NOT Thread Safe! More...

void	InitSeedDefault (size_t iSize=sizeof(int))

void	InitSeedUns (UINT iSeed)

virtual HRESULT	GetNoise (void *pData, size_t iSize) override
	fill array with random. return # filled. More...

virtual UINT	get_RandUns ()

bool	GetRandBool ()

int	GetRandIRange (int iRangeLo, int iRangeHi)

Static Public Attributes
static const SEED_t	k_RAND_MAX = 0x7fff
	0x7fff = RAND_MAX, 31 bits of random. More...

Additional Inherited Members
Public Types inherited from Gray::cRandomBase
typedef UINT	SEED_t
	default seed size might be 32 or 64 bit depending on k_RAND_MAX. More...

Detailed Description

Like the default 'C' library seeded pseudo-random number generator ::srand() and ::rand() Control a series of pseudo random numbers via a seed. not thread safe. Use cThreadLocal to make thread safe. RESOLUTION = k_RAND_MAX

Constructor & Destructor Documentation

◆ cRandomDef()

Gray::cRandomDef::cRandomDef ( SEED_t nSeed = 1 )

like ::srand() http://stackoverflow.com/questions/4768180/rand-implementation

◆ ~cRandomDef()

Gray::cRandomDef::~cRandomDef ( )

virtual

Member Function Documentation

◆ GetRandNext()

UINT Gray::cRandomDef::GetRandNext ( )

Get next pseudo random number like ::rand(); k_RAND_MAX assumed to be 32767

◆ GetRandUX()

UINT Gray::cRandomDef::GetRandUX ( UINT nScale )

overridevirtual

Get random number in scale. 0 to scale. unsigned integer is NON inclusive range. from 0 to nScale-1

Returns: value from 0 to less than nScale. (non inclusive of nScale) granularity may be effected by k_RAND_MAX (much larger for Linux) like rand()

Note: : _WIN32 rand() is NOT thread safe. 2 threads will get the same value if called at the same time !!

get random integer number in 0 to < nScale range NON inclusive default implementation.

Note: derived implementation MUST override get_RandUns() or GetRandUX()

Reimplemented from Gray::cRandomBase.

◆ InitSeed()

void Gray::cRandomDef::InitSeed	(	const void *	pData,
		size_t	iSize
	)

overridevirtual

Start a repeatable series of pseudo random numbers like ::srand()

Implements Gray::cRandomBase.

Member Data Documentation

◆ k_RAND_MAX

const SEED_t Gray::cRandomDef::k_RAND_MAX = 0x7fff

static

0x7fff = RAND_MAX, 31 bits of random.

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

c:/Dennis/Source/Gray/GrayCore/include/cRandom.h
c:/Dennis/Source/Gray/GrayCore/src/cRandom.cpp

Public Member Functions

Static Public Attributes

Additional Inherited Members