Re^2: is rand random enough to simulate dice rolls?

thanks shmem and all

In effect this sounds the wiser thing to do. I have modified my .t file to just emit a warning via diag


my $tenk;
$tenk += 1 + int( rand(6) ) for 1..10000;
my $avg = $tenk/10000;
# $avg = 5; # uncomment this line to provoke the warning
if ( ($avg < 3.4) or ($avg > 3.6) ){
    diag("\n\n\nPROBLEM: you got an average of $avg while was expected
+ a value > 3.4 and < 3.6\n\n\n".
            "The average was made on 10000 results.\n".
            "This can happen in old Perl distribution on some platform
+.\n".
            "In future distributions of this module you might be able 
+to load a different random number generator\n\n\n\n")
}
else{
    ok ( $avg > 3.4, "average randomness ok (10000d6 / 10000 > 3.4)" )
+;
    ok ( $avg < 3.6, "average randomness ok (10000d6 / 10000 < 3.6)" )
+;
}
[download]

UPDATE nothing critical nor crucial: I'm just started a little project just to clean my rusty hands: it was a long time (for me) without coding :)

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

Comment on Re^2: is rand random enough to simulate dice rolls? Select or Download Code

Replies are listed 'Best First'.
Re^3: is rand random enough to simulate dice rolls? by haukex (Bishop) on Jan 04, 2021 at 13:20 UTC
Note that you don't really need the two `ok`'s in the `else` since the conditions have already been tested, and in fact they may fail in case `$avg==3.4 or $avg==3.6`. You could just do `else { pass "average randomness ok (3.4 < 10000d6 / 10000 < 3.6)" }` instead.	[reply] [d/l] [select]
Re^4: is rand random enough to simulate dice rolls? by Discipulus (Abbot) on Jan 04, 2021 at 13:57 UTC
yes :) I was tempted to put there a `ok ( 1, "average randomness ok..` but seemed stupid. I forgot the `pass` option. Thanks L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l] [select]


Perl-Sensitive Sunglasses
	PerlMonks