refactor: review format and imports

src/rand.c

@@ -13,11 +13,11 @@ static unsigned long rand(void) {
   return (unsigned long)(x >> (22 + count));
 }
 
-void set_seed(unsigned long long seed) {
+void rand_set_seed(unsigned long long seed) {
   mcg_state = 2 * seed + 1;
   (void)rand();
 }
 
 unsigned int rand_uint(const unsigned int max) {
   return max == 0 ? 0 : (unsigned int)(rand() % max);
-}
+}