On Mon, 06 Dec 2010 22:07:17 -0600
Harry Putnam <rea...@newsguy.com> wrote:
> Is there any way to reduce the amount of decimals math might be
> carried too short of printf?
>
> I always find printf to end up taking a fair bit of time, since I've
> forgotten most of what I ever knew about it each time I run into a
> need for it.
>
> I just wondered if there is any other kind of limiting mechanism?
>
> It would be handy if simple math like:
>
> my $ans = (261 / 59.00)
>
> could be made to show only 2 decimal places like:
> 4.42
>
> instead of:
> 4.42372881355932
Hi,
Do a perldoc -f sprintf
The first few lines are;
===========================================================
sprintf FORMAT, LIST
Returns a string formatted by the usual "printf" conventions of the C
library function "sprintf". See below for more details and see
sprintf(3) or printf(3) on your system for an explanation of the
general principles.
For example:
# Format number with up to 8 leading zeroes
$result = sprintf("%08d", $number);
# Round number to 3 digits after decimal point
$rounded = sprintf("%.3f", $number);
===========================================================
Owen
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