perlquestion
Ryszard
I realise this is more than an algorithmic question, but figured someone here has a higher level of math geekyness than i.
<p>What i want to do is round an integer to the closest unit.</p>
<p>In this specific case, i'm running a cronjob every five mins, and putting the data into a database for later processing.</p>
<p>What i'm after is rounding the timestamp from the database to the nearest 5 mins. I've come up with something, which seems to work, however i'm wondering if this is the most efficient way to do it.</p>
<code>
#!/usr/bin/perl -w
use strict;
my @time = localtime(time);
my $prec = 5;
my $number = 52;
$\="\n";
my $div = $number%$prec;
$div = 1 if ($div == 0);
my $num = sprintf("%.1f", $number/$div );
my $intnum = int sprintf("%.1f", $number/$div );
if ( ($num-$intnum) >= .5) {
print $prec-($number%$prec)+$number;
} else {
print $number-($number%$prec);
}
</code>