(Compatible with UNIX System V C)
double drand48(); r = drand48();
"drand48" returns a pseudo-random number in the range [0.0,1.0). The random generator used is the linear congruential algorithm and 48-bit integer arithmetic. Before the first call to "drand48", you should call "srand48" or "seed48" to initialize the random "seed".
expl c lib seed48 expl c lib srand48 expl c lib erand48 expl c lib jrand48 expl c lib lrand48 expl c lib mrand48 expl c lib nrand48 expl c lib lcong48 expl c lib rand
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