float point exception, waiting for debugging

src/rng.h

@@ -0,0 +1,30 @@
+#ifndef __RNG_H__
+#define __RNG_H__
+
+#include <time.h>
+#include <stdlib.h>
+#include <vector>
+
+// Technically, you should ONLY define one rng for the entire program
+// IMPORTANT: pass all RNG objects as references
+class RNG final {
+private:
+        const unsigned int init_seed;
+        int curr_rand_num;
+public:
+        RNG(); // use time(0) as the seed
+        RNG(const unsigned int seed); // use a seed
+
+        int rand_num(); // returns a random number between 0 and RAND_MAX
+
+        // IMPORTANT: all upper bounds are not included, all lower bounds are
+        int rand_between(const int lower_bound, const int upper_bound);
+        // returns a random number between 0 and upper_bound
+        int rand_under(const int upper_bound);
+        unsigned int get_init_seed() const;
+        int get_curr_rand_num() const;
+
+        template<class T> T &get_rand_in_vector(const std::vector<T> &vec);
+};
+
+#endif