void
lwmsg_session_generate_cookie(
LWMsgSessionCookie* cookie
)
{
mt m;
uint32_t seed[3];
uint32_t s;
int i;
LWMsgTime now;
lwmsg_time_now(&now);
/* Add in 32 bits of data from the address of the cookie */
seed[0] = (uint32_t) (size_t) cookie;
/* Add in 32 bits of data from the current pid */
seed[1] = (uint32_t) getpid();
/* Add in 32 bits of data from the current time */
seed[2] = (uint32_t) now.microseconds;
mt_init_by_array(&m, seed, sizeof(seed) / sizeof(*seed));
for (i = 0; i < sizeof(cookie->bytes); i += sizeof(s))
{
s = mt_genrand_int32(&m);
memcpy(cookie->bytes + i, &s, sizeof(s));
}
}
void main(void){
mt_t mt;
uint32_t init[4] = {61731, 24903, 614, 42143};
unsigned int length = 4;
mt_init_by_array(&mt, init, length);
for (int i = 0; i < 2000; i++) {
printf("%.16f ", mt_genrand_res53(&mt));
if (i%5==4)
printf("\n");
}
}