topic Re: Simple Arithmatic Function in Operating System - HP-UX

Simple Arithmatic Function

Scott Frye_1 — Tue, 09 Nov 2004 15:22:05 GMT

I'm trying to do:

$i / $m = x
where i = 205
m = 400
and x should equal .5125. Problem is everything I've tried gives me x=0. What am I missing.

Re: Simple Arithmatic Function

Patrick Wallek — Tue, 09 Nov 2004 15:26:40 GMT

If this is in a script do:

x=$(echo "${i}/${m}" | bc -l)

Re: Simple Arithmatic Function

A. Clay Stephenson — Tue, 09 Nov 2004 15:27:45 GMT

The problem is that the shell only does integer arithmetic. Use awk or bc.

#!/usr/bin/sh

I=205
M=400
RESULT=$(echo "scale=4; ${I} / ${M}" | bc)
echo "Result = ${RESULT}"

Man bc for details.

Re: Simple Arithmatic Function

Scott Frye_1 — Tue, 09 Nov 2004 15:30:03 GMT

Works perfectly Patrick. Thanks!