topic Re: Limiting awk math output to 4 decimal places in Operating System - HP-UX

Limiting awk math output to 4 decimal places

Jaris Detroye — Tue, 22 Apr 2003 18:37:53 GMT

When I do math in AWK I get answers much more precise then I need. Is there an easy way to tell AWK to round off to 4 decimal places?

e.g. - .45678 would be .4568

Re: Limiting awk math output to 4 decimal places

James R. Ferguson — Tue, 22 Apr 2003 18:47:11 GMT

Hi:

# echo "0.45678"|awk '{printf "%2.4f\n",$0}'

...thus, 'printf' will do it.

Regards!

...JRF...

Re: Limiting awk math output to 4 decimal places

John Poff — Tue, 22 Apr 2003 18:49:24 GMT

Hi,

You can use the printf function in awk. If you are familiar with C or Perl, it works pretty much the same way.

printf("%2.4d \n", mynum)

would format your mynum variable to two places before the decimal and four places after the decimal.

JP

Re: Limiting awk math output to 4 decimal places

Andrew Herrmann — Tue, 22 Apr 2003 18:50:39 GMT

You could try something like:

rout = sprintf("%4.4f", odata);

I ran a quick test and get the following:

in: .45678 out: 0.4568
in: .45672 out: 0.4567

Andy

Re: Limiting awk math output to 4 decimal places

Leif Halvarsson_2 — Tue, 22 Apr 2003 18:52:09 GMT

Hi,
Look at the printf
printf "%4.4f", 10/3