Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!nrl-cmf!ames!pasteur!ucbvax!decwrl!hplabs!hp-pcd!hpcvlx!bturner
From: bturner@hpcvlx.HP.COM (Bill Turner)
Newsgroups: comp.windows.ms
Subject: Re: Windows and Floating Point
Message-ID: <106580022@hpcvlx.HP.COM>
Date: 30 Jan 89 18:23:08 GMT
References: <332@rna.UUCP>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 21

> I am having trouble using floating point code in my windows programs.
> (Env -- msc 5.1, new libraries from Genie which were called C5FIX,
> the new Genie link4, win sdk1.04) When I used the original sdk 1.04
> stuff, programs containing floating point don't run. There is no
> explanation, you double click on the .exe and nothing happens. Same
> prog minus the floating point works ok. I tried the -FPa and -FPi
> varieties of floating point. With the C5FIX libraries and link4 (from
> Genie) I can't get it to link correctly. Link4 complains that something
> (__fptask??, I'm at work and the error messages are at home) is 
> multiply defined. The link4 libraries are swin.lib and slibce.lib, and
> the link4 switches are /NOD and /NOE.

If you want to use the 8087 emulator library, there is a special version
that Windows can use.  You need to link with WIN87EM.LIB (an import library)
and WIN87EM.EXE must be around at runtime.  This supersedes the regular
C emulator library.

I've used this from a beta version of the Windows SDK, and it seems to
work fine.  Allowed the Mandelbrot program to use the 8087 installed.

--Bill Turner