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Re: How do I print/round a number to a given number of decimal places?

by Munkey (Novice)
on Aug 26, 2015 at 22:34 UTC ( [id://1140129]=note: print w/replies, xml ) Need Help??


in reply to How do I print/round a number to a given number of decimal places?

Perhaps not as fast as printf, but pretty fast, and not using anything special: 
sub round {

    my ($nr,$decimals) = @_;
    return (-1)*(int(abs($nr)*(10**$decimals) +.5 ) / (10**$decimals))
+ if $nr<0;
    return int( $nr*(10**$decimals) +.5 ) / (10**$decimals);

}

[download]
strange that no-one has posted this, seems like the most straightforward idea to me...
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