You can use sprintf('%.2f', $foo) to round it. There's probably a module does this automatically, but creating one isn't hard. Just tie a variable. 

{
    package BlahBlah;
    use Tie::Scalar;
    @ISA = 'Tie::StdScalar';
    sub STORE { ${+shift} = sprintf '%0.2f', pop }
}

tie my $foo, 'BlahBlah'; 

$foo = 1;
print "$foo\n";  # 1.00

$foo = 1.005;
print "$foo\n";  # 1.00

$foo = 1.025;
print "$foo\n";  # 1.02

$foo = 0;
print "$foo\n";  # 0.00

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Juerd
- http://juerd.nl/
- spamcollector_perlmonks@juerd.nl (do not use).

In reply to Re: Fixed precision numbers by Juerd
in thread Fixed precision numbers by iburrell

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