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

Re: Funny sprintf rounding - how does it work?

by Athanasius (Abbot)
on Sep 03, 2012 at 16:55 UTC ( #991477=note: print w/ replies, xml ) Need Help??


in reply to F***ing sprintf rounding - how does it work?

As one would expect?

2:51 >perl -e "printf qq[%s => %.20f => %.1f\n], (qq[0.${_}5]) x 3 fo +r (0..9)" 0.05 => 0.05000000000000000300 => 0.1 0.15 => 0.14999999999999999000 => 0.1 0.25 => 0.25000000000000000000 => 0.3 0.35 => 0.34999999999999998000 => 0.3 0.45 => 0.45000000000000001000 => 0.5 0.55 => 0.55000000000000004000 => 0.6 0.65 => 0.65000000000000002000 => 0.7 0.75 => 0.75000000000000000000 => 0.8 0.85 => 0.84999999999999998000 => 0.8 0.95 => 0.94999999999999996000 => 0.9

:-)

Athanasius <°(((><contra mundum


Comment on Re: Funny sprintf rounding - how does it work?
Download Code
Re^2: Funny sprintf rounding - how does it work?
by ribasushi (Monk) on Sep 03, 2012 at 17:02 UTC
    Gah! Such a simple and straightforward way to demonstrate this ;) Thanks!

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://991477]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (10)
As of 2015-07-01 21:35 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (22 votes), past polls