Common interface to the software PRNG. More...

Detailed Description

Common interface to the software PRNG.

Definition in file random.h.

#include <inttypes.h>
#include <stddef.h>

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Macros
#define	RANDOM_SEED_DEFAULT (1)
	Seed selected when all tries to collect seeds from a random source failed.

#define	PRNG_FLOAT (0)
	Enables support for floating point random number generation.

Functions
void	random_init (uint32_t s)
	initializes PRNG with a seed

void	random_init_by_array (uint32_t init_key[], int key_length)
	initialize by an array with array-length init_key is the array for initializing keys key_length is its length slight change for C++, 2004/2/26

uint32_t	random_uint32 (void)
	generates a random number on [0,0xffffffff]-interval

void	random_bytes (void *buf, size_t size)
	writes random bytes in the [0,0xff]-interval to memory

uint32_t	random_uint32_range (uint32_t a, uint32_t b)
	generates a random number r with a <= r < b.

double	random_real (void)
	generates a random number on [0,1)-real-interval

double	random_real_inclusive (void)
	generates a random number on [0,1]-real-interval

double	random_real_exclusive (void)
	generates a random number on (0,1)-real-interval

double	random_res53 (void)
	generates a random number on [0,1) with 53-bit resolution

Macros