Date: 6 Apr 2000 23:46:20 +0200 From: naddy@mips.rhein-neckar.de (Christian Weisgerber) To: freebsd-questions@freebsd.org Subject: Re: Comparing Floats in a /bin/sh Script Message-ID: <8cj0jc$1gar$1@bigeye.rhein-neckar.de> References: <20000406120827.A4198@cc942873-a.ewndsr1.nj.home.com>
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Crist J. Clark <cjclark@home.com> wrote:
> I want to compare two floating point numbers in a /bin/sh script. I
> cannot seem to find an easy way to do so. The best I've come up with
> is,
>
> if awk "BEGIN { if ( $A < $B ) { exit 0 } else { exit 1 } }"; then ...
>
> There's got to be a better way?
Hmm.
if [ "$(echo "$A < $B" | bc)" -eq 1 ]; then ...
Actually, that's worse.
There is not shell built-in operator to handle floating point numbers.
You need to use some external utility. awk(1) isn't a bad choice.
--
Christian "naddy" Weisgerber naddy@mips.rhein-neckar.de
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