Irrlicht 引擎的偽隨機數產生公式

int seed = 0x0f0f0f0f;

//! generates a pseudo random number
int rand()
{
const int m = 2147483399; // a non-Mersenne prime
const int a = 40692; // another spectral success story
const int q = m/a;
const int r = m%a; // again less than q

seed = a * (seed%q) - r* (seed/q);
if (seed<0) seed += m; return seed; }