rounding a decimal number to the upper value

Hello there,
Could anyone please suggest a way to round a no: in a way similar to that of ceil in C. That is I want to get 10 as output for any input between 9 and 10.
I tried using int. But it works the reverse way.
Please help.

Could u please suggest a good site for learning Perl.

Thank u for all your help.
Dups

Try something like this:


Now the $rd_value will equal 10.

Hope this helps,

Mickalo

Hello there,

Thank u Mickalo for ur quick reply. I had tried your solution, but it creates problem when $val=10
Then the value returned by your solution is 11, but i require 10 then also.
Please help.
Also please suggest some good sites for learning Perl.

Thank u again.
Dups

This should do it!

As far as a Perl resources, you can try http://www.cgi-resources.com CGI Resources , http://www.hotscripts.com HotScripts, right here at http://www.devshed.com Devsheld. They all have some excellent tutotials, links to Perl info.


Mickalo

[Edited by mickalo on 02-27-2001 at 08:12 AM]

assuming that $val is definately going to have a float value, ie: it cant be equal to "10" or "10." it must be "10.00", then the following will work

$val = "9.45";
$rd_value = (split(/\./, $val))[-1] > 0 ? int($val) + 1 : int($val);

cheers
Danial

You guys are all analyzing the number as if it where a string... which takes extra processing. Do something like this instead:

This assumes that $val holds your number and that it is actually a number (you may want to add $val += 0; above it to ensure that it is a number). Now $value holds your correct number

Thank u very much JohnLed.
Also I thank tigris and mickalo.

I was thinking whether is a single function which does this.
I think there is not.

Thanks again.

Dups

Well you can use sprintf if you'd like, I guess I didn't think of that before:

This would give you a padded number to 2 places before the decimal and none after. But once again, you'll have to figure out if it was an int in the first place like we did before.

The method I stated above is the best. It's simple and will work every time without treating the number like a string.