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Hacker's Delight Review by Shlomo Yona

Fun, interesting and useful

My first introduction to binary operators wizardry was in a 1st year, 1st semester course in Digital Systems at the Technion, IIT. I thought it was fun. While I was trying to write a computer program to compute Karnaugh Maps for me, I run into performance problems, and then some binary hackery helped me get back on the horse.

Since then, whenever I come across some binary trick I write it down with a few examples of usage and sometimes with some reasoning why it works.

Then came "Hacker's Delight" and I felt compelled to buy it.

I wasn't disappointed at all! Not only it contained all of the tricks that I have collected, but also it contains a lot more in depth examples of how these tricks can come in handy when trying to squeeze performance from an implementation or save a few more bytes and bits.

The book also gave me a fresh perspective on the implementation of some well known algorithms with the twist of binary arithmetic. This was very enlightening.

I read the "BASICS" chapter (chapter 2) with a single breath of air, and just couldn't leave it down. Not only it was nice to have all these tricks summarized in one book, but also I liked some of the reasoning and the "so-called" proofs.

Remaining chapters were, as I mentioned before, a fresh look for me on known algorithms. This fresh look was through the glasses of binary arithmetic.

I'd recommend this book to anyone who feels comfortable with binary arithmetic and/or computer organization -- even just for the fun of it!

I'd recommend the book to developers who don't necessarily have a sympathy to this topic, but would like a Copy&Paste solution to some problems they have to tackle.

I really enjoyed reading this book, and I will probably reference it from time to time.