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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 257

active  Topic # 1475  Random Numbers

05/11/2006 @ 20:15
by Garfield

Anonymous
Hi

According to the manual, the function RND(v|n) returns an integer pseudo-random number in the [0...v|n] range.

However, from the code I am producing, the [0...v|n] range includes the zero, but does not include v|n itself.

For example, I have been producing the results of RND(9) and I have seen the numbers 0 to 8, but not 9.

Is this correct? Does the RND(v|n) function really produce numbers between 0 and v|n-1 or am I missing something?

Thanks.
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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Answer n° 1
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05/11/2006 @ 20:54
by aldweb

Anonymous

visitor
 Hello Garfield,

The documentation says that the RND functions returns an integer pseudo-random number in the [0..v|n[ range, not in the [0..v|n] range.

[0..v|n[ is equivalent to [0..(v|n)-1] range if you want.

So, RND(0) will return values between 0 and 8, never 9.

Cheers,
aldweb


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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Answer n° 2
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05/11/2006 @ 21:20
by Garfield

Anonymous

visitor
 Aaaaahhh! Yep, you're right.

I hadn't noticed the reversed bracket. I'll have to revise my HTML/iSilo documentation as well as I've typed it wrong in there too!

However, if it's OK with you, I prefer to state that it's in the range [0...v|n-1]. I feel this is clearer. A reversed bracket is very easy to miss (I missed it!).

What do you think?
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