RNG_rand48 Class Reference

#include <gpu_random.h>

Collaboration diagram for RNG_rand48:

Public Member Functions
	RNG_rand48 (int seed, int _max=0)
	initialize the RNG with seed, just as the standard srand48-function
void	generate (int n)
void	generate (int n, int n_max)
void	get (int *r, int n)
void *	get_random_numbers ()

Static Public Attributes
static const unsigned int	MAX_RANGE =0x7FFFFFFF

Detailed Description

a rand48 random number generator. The random number generator works similar to the standard lrand48. The seed, which is normally set by srand48, here a parameter of the constructor. Random numbers are drawn in two steps:

• first, random numbers are generated via the generate function, and then
• then, they can be retrieved via the get function Alternatively, you can use them directly on the GPU. A pointer to the random number array can be retrieved by get_random_numbers. This functions returns a void *, to avoid CUDA data types in this header file. The true type is however int *.

Definition at line 42 of file gpu_random.h.

Member Function Documentation

void RNG_rand48::generate

(

int

n

)

generate n random numbers as 31-bit integers like lrand48

void RNG_rand48::generate	(	int	n,
		int	n_max
	)

generate n random numbers as 31-bit integers like lrand48 with user specified max value

void RNG_rand48::get	(	int *	r,
		int	n
	)

get the first n of the previously generated numbers into array r. r must be large enough to contain all the numbers, and enough numbers have to be generated before.

void* RNG_rand48::get_random_numbers ( )

inline

return a GPU pointer to the generated random numbers, for using them in other GPU functions.

Definition at line 91 of file gpu_random.h.

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

• gpu_random.h