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Bug with numeric calculation


From: Dr. C. Griewatsch
Subject: Bug with numeric calculation
Date: Thu, 17 Aug 2006 10:10:49 +0200 (CEST)

Hi,

Linux Debian 3.1

Linux linuxserv 2.6.11.7 #4 SMP Wed Apr 27 18:46:38 CEST 2005 i686 GNU/Linux

gawk --version
GNU Awk 3.1.4

echo 1.0 1.1 | gawk '{print 0.1+$1-$2}'
0

echo 1.1 1.2 | gawk '{print 0.1+$1-$2}'
2.22045e-16

The same error can be reproduced with gawk 3.1.5 on the same machine, or
with gawk 3.1.0 on Solaris 5.8, and with gawk 3.1.4 on Suse 9.3.

Regards,

Carsten

--
 Dr. Carsten Griewatsch / Leitung EDV / Institut fuer Geowissenschaften
 Christian-Albrechts Universit├Ąt zu Kiel / Otto-Hahn-Platz 1, D-24118 Kiel
 Tel.   +49 431 880-3919       Fax  +49 431 880-4432
 E-Mail  address@hidden    WWW  http://www.ifg.uni-kiel.de/~carsten





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