#ifndef _RAND_H
#define _RAND_H

#include <stdlib.h>
#include <time.h>  /* time.h is required for random number generator */

/* SEED and loadingtime are required to get random numbers */
extern unsigned int SEED;
extern long loadingtime;

/* return random number from 0 to 1 */
double drand(void);

/* return random number from -1 to 1 */
double drand2(void);

int init_random(int arg);

unsigned int get_seed(void);

#endif /* !_RAND_H */