Common interface to the software PRNG. More...

Detailed Description

Common interface to the software PRNG.

Various implementations of a PRNG are available:

Tiny Mersenne Twister (default)
Mersenne Twister
Simple Park-Miller PRNG
Musl C PRNG
Fortuna (CS)PRNG
Hardware Random Number Generator (non-seedable) HWRNG differ in how they generate random numbers and may not use a PRNG internally. Refer to the manual of your MCU for details.

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 More...

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 More...

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

void	random_bytes (uint8_t *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. More...

Macros