rand() sucks, and dealing with its wonky srand() is a drag. I wrote a simple ranged random number generator, it is part of my C math library header “Emaths”, it uses Xorshift shift-register method, here's the code:
struct RandState{
uint64_t seed;
bool initialized = false;
};
RandState RANDSTATE;
uint64_t rand_XOR(){
if (!RANDSTATE.initialized){
RANDSTATE.seed = time(NULL);
RANDSTATE.initialized = true;
}
uint64_t x = RANDSTATE.seed;
x ^= x << 9;
x ^= x >> 5;
x ^= x << 15;
return RANDSTATE.seed = x;
}
int rand_range(int min, int max){
return min + rand_XOR() % (max - min + 1);
}