DOCUMENT:Q97265  04-DEC-1999  [win16sdk]
TITLE   :SAMPLE: Floating-Point Samples for Windows
PRODUCT :Microsoft Windows Software Development Kit
PROD/VER:WINDOWS:3.1
OPER/SYS:
KEYWORDS:kbfile kbsample kb16bitonly kbOSWin310

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The information in this article applies to:

 - Microsoft Windows Software Development Kit (SDK) 3.1 
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SUMMARY
=======

WinFloat consists of five programs and libraries that provide sample code and
tools to explore the floating-point mechanisms of Microsoft Windows.

MORE INFORMATION
================

The following file is available for download from the Microsoft Download
Center:

   Winfloat.exe
   (http://download.microsoft.com/download/platformsdk/sample91/3.1/W31/EN-US/WINFLOAT.EXE)

For additional information about how to download Microsoft Support files, click
the article number below to view the article in the Microsoft Knowledge Base:

   Q119591 How to Obtain Microsoft Support Files from Online Services

Microsoft used the most current virus detection software available on the date of
posting to scan this file for viruses. Once posted, the file is housed on secure
servers that prevent any unauthorized changes to the file.

 - FLOATAPP.EXE: Windows-based application used as a shell for testing
   application and dynamic-link library (DLL) floating-point issues. This
   application tests floating-point speed, generates exceptions, installs signal
   handler, masks and unmasks exceptions, and communicates with WIN87EM.DLL.
   Some capabilities depend on the math package chosen and/or the presence of a
   math coprocessor.

 - FLOATDLL.DLL: Floating-point Windows DLL. FLOATDLL is a subset of FLOATAPP,
   to which it dynamically links. FLOATDLL can generate and handle
   floating-point exceptions, and can be configured to install and maintain its
   own signal handler or use the default (or application) handler.

 - FLOATDOS.EXE: Floating-point MS-DOS(R) application. FLOATDOS is a subset of
   FLOATAPP that runs outside of Windows (or in a "DOS box"), thus allowing you
   to compare an MS-DOS application with a Windows-based application for
   exception handling and (most importantly) calculation speed.

 - HIDE87.COM: MS-DOS terminate-and-stay-resident (TSR) program that hides the
   80x87 from Windows-based applications. HIDE87 must be installed before you
   start Windows so you can trick Windows into thinking there's no math
   coprocessor.

 - SHOW87.EXE: MS-DOS control program that disables the HIDE87 TSR. SHOW87
   provides a way to turn off HIDE87 without rebooting the machine. As with
   HIDE87, SHOW87 must be executed before you start Windows so it can detect the
   math coprocessor.

See the sample code and the "Floating Point in Windows" technical article for
descriptions of these programs, their coding techniques, and the Windows
floating point architecture. For information on building these programs and
discussions of C version 6.0 versus C/C++ version 7.0 and emulator versus
alternate math packages, see the make file. Note that these sample have major
limitations if compiled with C 6.0.

WINFLOAT was built and tested under Microsoft Windows version 3.1 using Microsoft
Macro Assembler version 6.0 and Microsoft C/C++ version 7.0.

Additional query words: Win16SDK310 softlib kbSample

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Keywords          : kbfile kbsample kb16bitonly kbOSWin310 
Technology        : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK310
Version           : WINDOWS:3.1

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Copyright Microsoft Corporation 1999.