New PRNG for calculators

[Namir]

I was just tinkering with an HP-21 calculator and I tried the following (I had to do the INT part by hand):

r1 = Frac(exp(exp(exp(r0))))

Where r0 is the old random number, and r1 is the new random number. I then wrote a Matlab program to generate a million random number. Here is a sample set of results:

min = 1.646694727241993e-07
max = 0.999999882210702
mean = 0.500182006746859
sdev = 0.288245734345533

For the auto correlation between 1000 elements:

min = -0.003854280151534
max = 0.003319062287133
mean = 1.567008799132003e-05
sdev = 0.001003357884267

The method looks good for random numbers for calculators.

Namir