managing floating point

vince_2x · 09-21-2004, 06:52 PM

Hi!

i was just wondering if their si a way to manage floating point . Say for example,

If I do something like this... TOTAL = `expr 125 "/" 100`.. would give me 1 not 1.25 as expected.. any idea of how to manage this..

thanks

CroMagnon · 09-21-2004, 09:02 PM

I don't think you can do floating point in the shell, but if you have bc installed, you can do this:

TOTAL=`echo "scale=3;125/100" | bc /dev/stdin`

Scale defines how many figures after the decimal point. This is also possible with dc:

TOTAL=`echo "3 k 125 100 / p" | dc /dev/stdin`

vince_2x · 09-21-2004, 09:05 PM

Excellent cromagnon.. it works beautiful

cheers