From: Patrick Aussems <zyk@bugfactory.org>
To: zsh-users@sunsite.auc.dk
Subject: Floating point calculus error...
Date: 25 Aug 2002 17:22:20 +0200 [thread overview]
Message-ID: <1030288941.517.8.camel@Amok> (raw)
Hi all...
I was doing some shell scripts that were supposed to add CPU usages from
the ps output... But I got puzzled when I got an answer with a 17th
decimal while adding numbers with only 1 decimal... Strange isn't it?
This behaviour can be observed by doing the following command:
zyk@Amok:/home/zyk> echo $[0.4+0.4]
The value returned is: 0.80000000000000004 which is obviously not the
correct answer... Okay, floating points numbers are inaccurate, but
still...
Patrick
PS: I don't have the time to read the mailing lists, so I don't know if
this problem has already been reported...
PS2: Please CC me on replies, I'm not subscribed to this mailing list...
next reply other threads:[~2002-08-25 15:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-25 15:22 Patrick Aussems [this message]
2002-08-25 15:53 ` Vincent Lefevre
2002-08-25 16:32 ` David Kågedal
2002-08-25 18:07 ` Vincent Lefevre
2002-08-25 16:01 ` Erik Trulsson
2002-08-25 16:37 ` Bart Schaefer
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