in reply to Re: Rand() with ?log10? distribution?
in thread Rand() with ?log10? distribution?

We have a winner! sub primo2{ int( rand() ** 4 * $_[0] ) } Thanks.

I came up with a few of my own: 

sub   xx2{ int(   2**(   2**( rand() * logN( $_[0],   2 ) ) ) ) }
sub  xx10{ int(  10**(  10**( rand() * logN( $_[0],  10 ) ) ) ) }
sub  xx20{ int(  20**(  20**( rand() * logN( $_[0],  20 ) ) ) ) }
sub xx100{ int( 100**( 100**( rand() * logN( $_[0], 100 ) ) ) ) }

[download]

which I actually prefer to your original because they drop faster at the beginning but don't dip so low at the end, but they are computationally expensive and require the upper limited supplied as a log.

Then I tried varying the exponent on yours, and found its ease of tunability the winning feature. Many thanks.

graph (The above 4 are red, blue, green and cyan respectively, your original(^2) is magenta, and my chosen variation on it (^4) is yellow.)

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In Section Seekers of Perl Wisdom