Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Re: convert output from exponentional notation to normal

by kennethk (Abbot)
on Mar 19, 2013 at 15:58 UTC ( #1024327=note: print w/replies, xml ) Need Help??


in reply to convert output from exponentional notation to normal

Yes, as both previous posters said, printf/sprintf. The most flexible format choice is %g, which will swap between scientific notation and fixed decimal depending on precision and behaves most like Perl's default. %f means always use fixed decimal and %e means always use scientific.

In your case, I would probably also round numbers, since I have rarely seen the need for more the 3 significant figures for output outside of scientific computing. So my go to format here would probably "%.3g" for easy digestion, though %.8f is what meets your spec...

printf "%.8f\n", $counts / $total;


#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1024327]
help
Chatterbox?
[GotToBTru]: that's a name that should always be accompanied by a trumper fanfare
[GotToBTru]: trumpet, not trumper
[GotToBTru]: good thing too, Discipulus, no roads on the 7th floor either
[GotToBTru]: okay, fess up, who installed CB::Typo?
[Discipulus]: at 7th floor seagulls eat mice
[Discipulus]: just in Eataly: brain surgery while playing clarinet..
[erix]: installing perfect pitch?

How do I use this? | Other CB clients
Other Users?
Others exploiting the Monastery: (12)
As of 2017-11-17 20:12 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In order to be able to say "I know Perl", you must have:













    Results (272 votes). Check out past polls.

    Notices?