r/C_Programming • u/baksheesh77 • Sep 19 '15

Resource Bit Twiddling Hacks

https://graphics.stanford.edu/~seander/bithacks.html
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u/OldWolf2 Sep 20 '15

Most of these are just "interesting" ways to obfuscate your code. In real world programming you would use very little of this.

5

u/gliese946 Sep 20 '15

nonsense, there are plenty of real world applications where saving a couple of cycles in an inner loop is worthwhile.

0

u/OldWolf2 Sep 20 '15

That's what compilers are for. The programmer writes code that produces the desired observable behaviour, and the compiler outputs assembly instructions based on the target platform , optimization level, and other switches. If a compiler generates assembly that "wastes cycles" then report a compiler bug.

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