drand48 erand48 jrand48 lcong48 lrand48 mrand48 nrand48 seed48 srand48

drand48() double drand48 ( void  ) 48 bit real random number in [0,1) (Linear congruential method) Purpose Generates 48 bit real random number in [0,1) by linear congruential method. Returns Generated 48 bit real random number in [0,1). Note This routine is provided for Windows version.