Help! Can't access floating point instructions on an 11/23 plus

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Article #4972

#4972

From: Lawrence Snyder
Date: Tue, 31 May 1988 04:35

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I'm using an 11/23 plus, equipped with a floating point chip, for real
data time data collection.  'C' programs are compiled on an 11/73 running
unix and then down-line loaded into the 11/23.  I don't use any system
calls or include any system libraries in the compilation.

In general things run smoothly.  However, I am unable to use floating
point numbers in any way.  Do i need code to initialize the floating
point status register, for example?  Are there library routines in
-lm (the unix system's math library) that i need to include?
In short, I'm completely bewildered.  Any help would be appreciated -

larry@vax.cvs.rochester.edu

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!bellcore!rutgers!rochester!ur-tut!ur-cvsvax!larry
From: larry@ur-cvsvax (Lawrence Snyder)
Newsgroups: comp.sys.dec,comp.sources.wanted,comp.misc
Subject: Help! Can't access floating point instructions on an 11/23 plus
Keywords: floating point, 11/23, dec, programming
Message-ID: <802@vax.UUCP>
Date: 31 May 88 04:35:15 GMT
Distribution: comp
Organization: Center for Visual Science, Univ. of Rochester
Lines: 12