Random.cpp File Reference

#include "Random.h"
#include "Common.h"
#include "Errors.h"
#include "SFMT.h"
#include <boost/thread/tss.hpp>

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Functions
static SFMTRand *	GetRng ()
int32	irand (int32 min, int32 max)
uint32	urand (uint32 min, uint32 max)
uint32	urandms (uint32 min, uint32 max)
float	frand (float min, float max)
uint32	rand32 ()
double	rand_norm ()
double	rand_chance ()

Variables
static boost::thread_specific_ptr < SFMTRand >	sfmtRand

Function Documentation

float frand	(	float	min,
		float	max
	)

{
 ASSERT(max >= min);
 return float(GetRng()->Random() * (max - min) + min);
}

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static SFMTRand* GetRng ( )

static

{
 SFMTRand* rand = sfmtRand.get();

 if (!rand)
 {
 rand = new SFMTRand();
 sfmtRand.reset(rand);
 }

 return rand;
}

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int32 irand	(	int32	min,
		int32	max
	)

{
 ASSERT(max >= min);
 return int32(GetRng()->IRandom(min, max));
}

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uint32 rand32

(

)

{
 return GetRng()->BRandom();
}

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double rand_chance

(

)

{
 return GetRng()->Random() * 100.0;
}

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double rand_norm

(

)

{
 return GetRng()->Random();
}

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uint32 urand	(	uint32	min,
		uint32	max
	)

{
 ASSERT(max >= min);
 return GetRng()->URandom(min, max);
}

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uint32 urandms	(	uint32	min,
		uint32	max
	)

{
 ASSERT(max >= min);
 ASSERT(INT_MAX / IN_MILLISECONDS >= max);
 return GetRng()->URandom(min * IN_MILLISECONDS, max * IN_MILLISECONDS);
}

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Variable Documentation

boost::thread_specific_ptr<SFMTRand> sfmtRand

static