merlin — Fri, 10 Nov 2000 06:18:17 +0000

thank you, i'll try it...

Denise — Thu, 09 Nov 2000 17:16:16 +0000

Hi, someone helped me in another forum and I think this may well work, although I am yet to try it out.

$formatted_num = sprintf("%.2f", $original_num);

I guess just change "%.2f" to the number of decimal places you need, ie: "%.3f" for three decimal places.

Denise

quite similar

merlin — Thu, 09 Nov 2000 16:30:28 +0000

hu, i have quite the same question (now that you're talking about... ) :
i have an integer like 10 or 10.5 and i'd like to display it with two decimals: 10.00 (10.50)
so, it's not less a rounding question than a display-thing...

Denise — Thu, 09 Nov 2000 15:07:05 +0000

Cheers Guys,

I'll give these a try!

Denise

japhy — Thu, 09 Nov 2000 12:53:07 +0000

So, given a number of decimal places, you want to round to the nearest value. So, 1.345 rounded to ONE place would be 1.3, but rounded to TWO places would be 1.35, right?

sub round {
  my ($n,$pl) = (@_,0);
  my $fact = 10**$pl;
  return $n > 0 ?
    int($n * $fact + .5)/$fact :
    -int(-$n * $fact + .5)/$fact;
}

It expects you give it a non-negative integer for the value of decimal places to round it to. Calling it as round($x) will round it to an integer; calling it as round($x,$N) will round it to $N decimal places.

anti — Thu, 09 Nov 2000 11:08:42 +0000

$x = 2.67653;
$x1 = int($x * 10 + 0.5)/10;
$x2 = int($x * 100 + 0.5)/100;

Untested, but should work.

Denise — Thu, 09 Nov 2000 02:45:18 +0000

Hi,

I mean, say I generate a number value of "2.67653" and want to round it "2.7" or "2.68" etc...

Denise

japhy — Thu, 09 Nov 2000 01:42:26 +0000

First, define "round". Which of the following do you mean:

"floor": -1.1 gets rounded to -2, -1.9 gets rounded to -2, 1.1 gets rounded to 1, 1.9 gets rounded to 1

"ceil": -1.1 gets rounded to -1, -1.9 gets rounded to -1, 1.1 gets rounded to 2, 1.9 gets rounded to 2

"int": -1.1 gets rounded to -1, -1.9 gets rounded to -1, 1.1 gets rounded to 1, 1.9 gets rounded to 1

"nearest": -1.1 gets rounded to -1, -1.9 gets rounded to -2, 1.1 gets rounded to 1, 1.9 gets rounded to 2

When you've told me what you mean, I can offer some specific help and code.