Copying random number generator state
The above methods do not expose the random number `state' which changes
from call to call. It is often useful to be able to save and restore
the state. To permit these practices, a few somewhat more advanced
functions are supplied. These include:
|int gsl_rng_memcpy (gsl_rng * dest, const gsl_rng * src)
This function copies the random number generator src into the
pre-existing generator dest, making dest into an exact copy
of src. The two generators must be of the same type.
|gsl_rng * gsl_rng_clone (const gsl_rng * r)
This function returns a pointer to a newly created generator which is an
exact copy of the generator r.