I'm dealing with some performance critical code-- a function which is called > 10^10 times in a typical execution. I've noticed that author used a lot of bit shifting instructions (foo >> 5) * (bar >> ...

Signal processing and communications algorithms frequently make use of dynamic bit rotates or shifts. Utilizing merged trees improves performance and reduces routing congestion using fewer resources.

This Design Idea presents a method for fast integer multiplying and multiplying by fractions. What can you do when you lack access to a hardware multiplier or MAC (multiply/accumulate) function and ...

1. Multiplying one byte by 256 then ORing it with the low order byte. 2. Bit shift the high byte and OR it with low order byte. Which is faster and is there a better way?