PcgRandom Class Reference

#include <noise.h>

Public Member Functions
	PcgRandom (u64 state=0x853c49e6748fea9bULL, u64 seq=0xda3e39cb94b95bdbULL)
void	seed (u64 state, u64 seq=0xda3e39cb94b95bdbULL)
u32	next ()
u32	range (u32 bound)
s32	range (s32 min, s32 max)
void	bytes (void *out, size_t len)
s32	randNormalDist (s32 min, s32 max, int num_trials=6)
void	getState (u64 state[2]) const
void	setState (const u64 state[2])

Static Public Attributes
static const s32	RANDOM_MIN = -0x7fffffff - 1
static const s32	RANDOM_MAX = 0x7fffffff
static const u32	RANDOM_RANGE = 0xffffffff

Private Attributes
u64	m_state
u64	m_inc

Constructor & Destructor Documentation

PcgRandom()

PcgRandom::PcgRandom	(	u64	state = 0x853c49e6748fea9bULL,
		u64	seq = 0xda3e39cb94b95bdbULL )

References seed().

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Member Function Documentation

bytes()

void PcgRandom::bytes	(	void *	out,
		size_t	len )

References next().

Referenced by myrand_bytes(), and TestRandom::testPcgRandomBytes().

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getState()

void PcgRandom::getState

(

u64

state[2]

)

const

References m_inc, and m_state.

Referenced by LuaPcgRandom::l_get_state(), and TestRandom::testPcgRandom().

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next()

u32 PcgRandom::next

(

)

References m_inc, and m_state.

Referenced by bytes(), OreVein::generate(), httpfetch_caller_alloc_secure(), myrand(), myrand_float(), range(), seed(), TestRandom::testPcgRandom(), TestRandom::testPcgRandomRange(), and TestMapBlock::testSaveLoad().

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randNormalDist()

s32 PcgRandom::randNormalDist	(	s32	min,
		s32	max,
		int	num_trials = 6 )

References myround(), and range().

Referenced by LuaPcgRandom::l_rand_normal_dist(), and TestRandom::testPcgRandomNormalDist().

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range() [1/2]

s32 PcgRandom::range	(	s32	min,
		s32	max )

References range().

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range() [2/2]

u32 PcgRandom::range

(

u32

bound

)

References next().

Referenced by BiomeGenOriginal::calcBiomeFromNoise(), DecoSchematic::generate(), DecoSimple::generate(), OreBlob::generate(), OrePuff::generate(), OreScatter::generate(), OreSheet::generate(), OreStratum::generate(), LuaPcgRandom::l_next(), myrand_range(), Decoration::placeDeco(), randNormalDist(), range(), TestRandom::testPcgRandomRange(), and Sky::updateStars().

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seed()

void PcgRandom::seed	(	u64	state,
		u64	seq = 0xda3e39cb94b95bdbULL )

References m_inc, m_state, and next().

Referenced by PcgRandom(), and mysrand().

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setState()

void PcgRandom::setState

(

const u64

state[2]

)

References m_inc, and m_state.

Referenced by LuaPcgRandom::l_set_state(), and TestRandom::testPcgRandom().

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Member Data Documentation

m_inc

u64 PcgRandom::m_inc

private

Referenced by getState(), next(), seed(), and setState().

m_state

u64 PcgRandom::m_state

private

Referenced by getState(), next(), seed(), and setState().

RANDOM_MAX

const s32 PcgRandom::RANDOM_MAX = 0x7fffffff

static

Referenced by LuaPcgRandom::l_next(), LuaPcgRandom::l_rand_normal_dist(), and TestRandom::testPcgRandomRange().

RANDOM_MIN

const s32 PcgRandom::RANDOM_MIN = -0x7fffffff - 1

static

Referenced by LuaPcgRandom::l_next(), LuaPcgRandom::l_rand_normal_dist(), and TestRandom::testPcgRandomRange().

RANDOM_RANGE

const u32 PcgRandom::RANDOM_RANGE = 0xffffffff

static

Referenced by OreVein::generate().

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

• noise.h
• noise.cpp