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From: george@hls0.hls.oz (George Turczynski)
Newsgroups: comp.unix.shell
Subject: Re: bourne shell query
Summary: Use "dc" if you have it.
Message-ID: <925@hls0.hls.oz>
Date: 5 Sep 90 06:00:42 GMT
References: <26DC6447.15922@maccs.dcss.mcmaster.ca> <8446@orca.wv.tek.com> <75@iconsys>
Lines: 34

In article <SCOTT.90Aug30124930@tab00.larc.nasa.gov> scott@tab00.larc.nasa.gov (Scott Yelich) writes:
>As a side question, does ANYONE have any bourne shell routines which do
>math... reasonably effeciently?  (For numbers > 1000?)

I don't know whose UNIX you have but you may have a utility called
"dc", for "desk calulator".  If you have it, read the man page.  It
will handle numbers > 1000 AND numbers with decimal fractions.

for example:

|>---------Cut here----------<|

#! /bin/sh

num="10000.0"

while [ $num != "10010.0" ];
do
        num=`echo "$num 0.2 + p" | dc`

        echo $num
done

|>---------Cut here----------<|


Just another idea...

-- 
| George P. J. Turczynski.          |---------------------------------------------------- 
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