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TestFPU

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Checks whether your computer suffers from the Floating Point Unit (FPU) accuracy degradation.

The TestFPU application was designed to be a small tool that checks whether your computer, running a 32-bit Windows, suffers from the Floating Point Unit (FPU) accuracy degradation.

FPU is a separate part of your processor, performing fast and accurate calculations on floating-point (roughly speaking: non-integer) numbers.

If you use any programs performing accurate calculations (mostly, but not only, scientific and engineering applications), you want your computer perform with the accuracy it was supposed to perform with. It turns out, under some Windows configurations the accuracy of your FPU is not up to specs.

The nominal accuracy of the FPU is 19-20 decimal digits. If your system is affected, the delivered accuracy is about 16 digits, or roughly one thousand times worse than it should be. Sometimes you can live with that, sometimes not.

For example, computing .33333333333333333333-1/3 should result in about 3E-20 if your FPU is OK. On affected systems the result will be about 2E-17. (Some applications, no names please, just cheat here, rounding either of these results to zero.) Even if you do not need this accuracy in the final results, some programs may depend on it in algorithms they use, and this may cause serious
misbehaviors.

As far as I was able to check, problem is not with the FPU itself (Intel, you're off the hook!) but with some memory-resident programs or device drivers, hooking themselves up to the operating system on a quite low level. They are supposed to do this without affecting anything except the things which they were written to do, but this is not the case.

Free download from Shareware Connection - Checks whether your computer suffers from the Floating Point Unit (FPU) accuracy degradation.

Publisher: J. Andrzej Wrotniak | License: Freeware | Price: 0.00
Version: 1.10 | Size: 163 KB | Platform: WinOther
Released Date: | Rating: 0 | Title: TestFPU

Author Url: http://www.wrotniak.net
Program Info Url: http://www.wrotniak.net
Download Url: http://www.wrotniak.net/works/testfpu/_zip/tfpu.zip

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Shareware Connection periodically updates pricing and software information of 'TestFPU' from company source 'J. Andrzej Wrotniak' , so some information may be slightly out-of-date. You should confirm all information before relying on it. Software piracy is theft,  Using 'TestFPU' crack, password, serial numbers, registration codes, key generators is illegal and prevent future development of TestFPU.

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