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From: fkittred@bbn.com (Fletcher Kittredge)
Newsgroups: comp.unix.ultrix
Subject: Determining IEEE NaN and INF on RISC Ultrix
Keywords: IEEE NaN INF MIPS low-endian
Message-ID: <59582@bbn.BBN.COM>
Date: 21 Sep 90 14:52:19 GMT
Sender: news@bbn.com
Reply-To: fkittred@spca.bbn.com (Fletcher Kittredge)
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Lines: 20


I need to determine whether a double precision floating point number is
a IEEE NaN or INF (+ or -) value on Sun, HP and DEC RISC systems.  Sun
and HP supply the isnan() and isinf() functions.  I can't find these
functions on the DEC systems.  There is a include file called
/usr/include/nan.h which seems to have macros for determining these
values, but the macros seem to be for a high-endian MIPS system, not
DEC's low-endian version.

Can anyone help me with this?

thanks!
fletcher


Fletcher E. Kittredge  fkittred@bbn.com
Platforms and Tools Group
BBN Software Products Company
10 Fawcett St.
Cambridge, MA. 02138