Not to be obtuse, but why can't you use rand? This smacks of an XY Problem.
Yes, I fully agree.
To the OP: please tell us why you can't (or don't want to) use the Perl random number generator, which is, I think, of a high quality and has been well tested over many years, and would want to go for something else, which is likely to work much less properly unless you are willing to commit huge amount of time to test how well it performs.
I once made a very basic pseudo random number generator, because I did not have any library available to do that for me in the environment that I was using. It ended up working for the purpose that I had, because the requirement was really not demanding. But trying to do that, you figure out that this is a very difficult problem, and sometimes very clever ideas fail miserably. (I knew it was quite difficult before I started, but I did not realize how much more difficult than I thought it was.)
I would suggest that you take a look at Donald Knuth's "The Art of of Computer Programming", Volume 2, Seminumerical Algorithms, Chapter 3, Random Numbers. Once you've read through the 190 pages (in the edition that I own) devoted to random numbers, I think that you will agree that you probably don't want a "quick fix" solution to such a complicated problem. Using a well tested library is far safer in probably more than 99.99% of the cases.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||