Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical

Re^2: Rounding off numbers

by bulrush (Scribe)
on Jan 25, 2016 at 14:22 UTC ( #1153571=note: print w/replies, xml ) Need Help??

in reply to Re: Rounding off numbers
in thread Rounding off numbers

<s>sprintf and printf no longer rounds sometime after Perl 5.8.8. It truncates. </s>

EDIT: I think I may have some bad information, which was corrected later on. If a calculation is done which results in 2.4999999999, sprintf("%.2f",2.49999999) would "round" to 2.49 for some reason, which appears to be truncation, but is actually a different problem. You may not be able to reproduce the problem by typing in 2.4999999. 2.49999999 has to be the result of a calculation.

Replies are listed 'Best First'.
Re^3: Rounding off numbers
by choroba (Archbishop) on Jan 25, 2016 at 14:28 UTC
    It truncates.
    Does it?
    $ perl -wE 'printf "%.3f\n", .0009 + $];' 5.023
    ($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1153571]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others cooling their heels in the Monastery: (7)
As of 2020-11-25 08:42 GMT
Find Nodes?
    Voting Booth?

    No recent polls found