I need to format any of these formats of numbers to a decimal with two places (#.00)...so these numbers: 
86902
.50
2.
165.0
0.666666666

[download]
would come out the other side as: 
86902.00
0.50
2.00
165.00
0.66

[download]
now, i have a series of regexes that gets the job done...but its ugly and a little bruteforce-ish: 
# if value is '#' then append ".00"
$curr .= ".00" if $curr =~ m/^\d+$/;
    
# if value is '.#' then prepend "0"
$curr = "0".$curr if $curr =~ m/^\.\d+$/;
    
# if value is '#.' then append "00"
$curr .= "00" if $curr =~ m/^\d+\.$/;
    
# if value is '#.0' then append "0"
$curr .= "0" if $curr =~ /^\d+\.\d$/;
    
# if necessary, truncate to 2 decimal places
$curr =~ s/^(\d+\.\d{2})\d+$/$1/;

[download]
so, this works just fine, its just not every elegant and i'm a stickler for clean code. is there a better way?

also, if theres an easy way to round to rather than truncate to 2 decimal places (so i'd get 0.67 instead of 0.66), by all means let me know!

2006-06-23 Retitled by planetscape, as per Monastery guidelines

( keep:0 edit:13 reap:0 )

Original title: 'a *cleaner* way to do it?'

In reply to How to give format to numbers? by Anonymous Monk

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