C++ Footprint and Performance Optimization

Arithmetic Operations

Most programs at some point perform arithmetic operations. This can be as simple as small addition or multiplication, or as complex as three-dimensional volume calculations. Whatever the case may be, often arithmetic operations can be broken down into several smaller, simpler steps involving a series of basic calculations and conversions. These steps are ideal candidates for optimization because they are generally used repeatedly on large amounts of data, and most contain looped or recursive functionality. The many optimization techniques discussed in this book are well suited for arithmetic optimization. Think for instance of rewriting recursive routines into iterative routines, using loop unrolling, creating tables of ...