Ebook Hacker's Delight (2nd Edition)
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Hacker's Delight (2nd Edition)
Ebook Hacker's Delight (2nd Edition)
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Review
“This is the first book that promises to tell the deep, dark secrets of computer arithmetic, and it delivers in spades. It contains every trick I knew plus many, many more. A godsend for library developers, compiler writers, and lovers of elegant hacks, it deserves a spot on your shelf right next to Knuth. In the ten years since the first edition came out, it’s been absolutely invaluable to my work at Sun and Google. I’m thrilled with all of the new material in the second edition.” — Joshua Bloch “When I first saw the title, I figured that the book must be either a cookbook for breaking into computers (unlikely) or some sort of compendium of little programming tricks. It’s the latter, but it’s thorough, almost encyclopedic, in its coverage. The second edition covers two new major topics and expands the overall collection with dozens of additional little tricks, including one that I put to use right away in a binary search algorithm: computing the average of two integers without risking overflow. This hacker is indeed delighted!” — Guy Steele
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About the Author
Henry S. Warren, Jr., has had a fifty-year career with IBM, spanning from the IBM 704 to the PowerPC and beyond. He has worked on various military command and control systems and on the SETL (SET Language) project under Jack Schwartz. Since 1973, Hank has been with IBM’s Research Division, focusing on compilers and computer architectures. He currently works on a supercomputer project aimed at an exaflop. Hank received his Ph.D. in computer science from the Courant Institute at New York University.
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Product details
Hardcover: 512 pages
Publisher: Addison-Wesley Professional; 2 edition (October 5, 2012)
Language: English
ISBN-10: 0321842685
ISBN-13: 978-0321842688
Product Dimensions:
6.5 x 1.3 x 9.2 inches
Shipping Weight: 1.8 pounds (View shipping rates and policies)
Average Customer Review:
4.6 out of 5 stars
40 customer reviews
Amazon Best Sellers Rank:
#45,469 in Books (See Top 100 in Books)
This book was recommended by my professor.It's basically a collection of binary math tricks that really help out in understanding the algorithms that are best suited for whatever you are trying to accomplish.It's pretty advanced so if you don't have a basic understanding of coding yet, then this will be pretty hard to grasp and make adequate use of it.
The value of this book is in it's shortcut for writing your own code for a microcontroller or generic processor. It contains many shortcuts that can be used at the machine code and c code level for general mathematics and bit detection and modification. There is a very good section on CRC mathematics and operations and error correction. However, a good knowledge of mathematical representation is desired since the book is not structured to make the information easy to understand. This would be a good book if you are trying to create complicated mathematical algorithms for a microprocessor or controller. I wouldn't recommend it for most programmers.
Incredibly unique book. The techniques and algorithms are incredibly useful for embedded development, but I cannot speak to its usefulness on x86 and would advise against using many of these techniques on there where most of this is implemented in hardware.What I got out of this:Multiword multiplication for fast high precision fixed point on ARM chips that lack fpus, branchless integer min and max is very handy for Thumb mode, pre-computing magic numbers for division and modulus enables MUCH faster lookups in hash tables, the graphs of functions at the very end are super fascinating, and the superoptimizer this man wrote is very simple but incredibly fun to play with! I adapted it to use multithreading and it's helped me reduce some code to the simplest possible sequence. I've had special success in reducing switch cases or long conditions involving integer arithmetic.Also I can definitely see uses for other things in the book, like the multibyte addition and the floating point chapter. Theres a little bit in there about the most famous bithack of them all. And the notation used is really clean.This book is a gem and I hope we get more in the future. For now though I'll settle for leafing through and discovering the things I missed.
This is fun and useful assortment of low-level coding tricks/super-efficient algorithms. For instance, there are specialized algorithms for computing integer division-by-7. Who knows when this is useful, but if you need to do it super fast, use the algorithm in this book to shave off a bunch of cycles compared with floating-point division plus rounding. That's just a taste; there are explanations of super-optimized routines for popcount (counting the # of 1s in a binary word), all sorts of other binary operation tricks, stuff of grey codes, applications of Hilbert curves to binary codes, even exotic bases for number representations such as base -2 (negative 2) or even imaginary/complex bases (who knew these even existed?) Plenty more in here -- those are just some random fun topics. If these sound interesting, you need to read this book.
There is a good possibility that most people who buy this will have no use for this information. If you do need it, its invaluable as a reference, and overall a great book to have on yours shelf. The book consists of recipes for simplifying many computational tasks with integers and floats using Boolean logic or mathematics. Where applicable, proofs are given. I am very happy with the content and format of this book. That being said, see my warning below.The book reads like a textbook and contains a lot of math. Most code is presented in assembly. Explanations are given but don't expect concrete answers. Getting a solution will require a bit of analysis on your part. if you don't like math or thinking things through, do not buy this book. If you have no experience with low/mid level languages, or bitwise operations, you may find yourself a little lost.
I develop for embedded systems. Mostly in C, but sometimes in assembly. This book is fantastic. I just got it today and can't put it down. You may have picked up a few of these tricks along the line, but THIS is the definitive collection, and I plan to keep it right on my desk.
Almost comedic in some of the bizarre voodoo this book provides. This is the closest thing to the Book of Shadows you'll ever get when it comes to niche and unique snippets of code for very specific circumstances.
nice book, good for reviewing it once in a while. Don't read before interviews, it might confuse you and most interviewers won't understand what you want to do. This is for very advanced and out-of-norm programmers
Great book and truly a gem, but if your math is weak look somewhere else because you'll be confused and un satisfied leaving this book on your shelf gaining dust.
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