Subroutine randomset returns random number "rndum" whose value is between 0 and 1.
In detail, the value of rndum is as follows;
1) 1.0 - 2^(-24) * n, n=1,2,3,,,,
This can be verified by running ucrandom_set.f with original randomset.f 
One will egs5job.out which will be the identical with org.out.

This can be also possible by carfully reading the list of randomset.f .

2) if(rndum.lt.2^(-12)) rndum=rndum+2^(-24) * seeds(j24)
This is written as comment in randomset.f . The process is called as "padding".

3) if(rndum.eq.0) rndum=2^(-48)
This is written as comment in randomset.f

Double presicion random number can be obtained by appllying the padding for 
any value of rndum. randomset_6Aug2015.f is the special version of randomset.f
for this purpose.

By overwriting randomset.f with randomset_6Aug2015, one can get double precision
random number. 
padded.out is an output from ucrandom_set.f when randomset_6Aug2015.f is used.

Y. Namito and H. Hirayama (KEK)

1. ucrandom_test.f
2. ucrandom_test.inp
3. randomset_6Aug2015.f
4. org.out
5. padded.out