Random

Pseudo Random Number Generator (PRNG)

void random_init(uint32_t s)

initializes PRNG with a seed

Parameters

s:seed for the PRNG

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

Parameters

init_key:array of keys (seeds) to initialize the PRNG
key_length:number of lements in init_key

uint32_t random_uint32(void)

generates a random number on [0,0xffffffff]-interval

Return values

  • a random number on [0,0xffffffff]-interval
void random_bytes(uint8_t * buf, msp430_types.h::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.

Parameters

a:minimum for random number
b:upper bound for random number

Return values

  • a random number on [a,b)-interval
RANDOM_SEED_DEFAULT

Seed selected when all tries to collect seeds from a random source failed. 

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PRNG_FLOAT

Enables support for floating point random number generation. 

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