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- gcc - Is Duffs device still useful? - Stack Overflow
Duff's Device is completely unnecessary - until you hit that edge case where the compiler produces some absolutely crap code and you're desperate to shave microseconds off of an opt-repeated loop and your boss is screaming and the investors are bailing and you're tearing your hair (both of them!) out, and then you remember Duff's Device, and a smile slowly spreads across your face, because
- How does Duffs device work? - Stack Overflow
Duff's device deals with serial copying, rather than just any old problem, but is a classic example of how optimisations can be made by reducing the number of times that a comparison needs to be done in a loop
- Android ColorFilter - Porter-Duff Modes - Stack Overflow
5 Note that Porter-Duff modes are only defined to work properly with premultiplied alpha That means that none of the R, G or B components can exceed the alpha value GitHub project for the Android project which shows off all the Porter-Duff modes The Android App is also available on Playstore
- Does Duffs Device work in other languages? - Stack Overflow
3 Duff's device is essentially a computed goto which can be done in many other languages - assembly (of course) and FORTRAN being a couple that support them directly
- Does Duffs Device Speed up Java Code? - Stack Overflow
Using the stock Sun 1 6 compiler and JRE JIT, is it a good idea to use the sort of extensive unroll exemplified by Duff's Device to unroll a loop? Or does it end up as code obfuscation with no performance benefit?
- Using two values for one switch case statement - Stack Overflow
In my code, the program does something depending on the text entered by the user My code looks like: switch (name) { case text1: { blah break; }
- c - duff device not working - Stack Overflow
"Duff's device" is the bizarre mixture of switch and loop If you separate the switch from the loop, it's no longer Duff's device
- c++ - How can Duffs device code be compiled? - Stack Overflow
Duff's device used to be faster than normal code (on some platforms at least) - it is hardly anymore In one project we did on Windows PCs and MSVC, already about 10 years ago, it turned out to be slower than optimized normal code
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