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Table of
Contents
Hacker's Delight
By
Henry S. Warren,
Publisher: Addison Wesley
Pub Date: July 17, 2002
ISBN: 0-201-91465-4
Pages: 320
Ripped by Caudex 2003
"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."-Josh 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." -Guy
Steele
These are the timesaving techniques relished by computer hackers-those devoted and
persistent code developers who seek elegant and efficient ways to build better
software. The truth is that much of the computer programmer's job involves a healthy
mix of arithmetic and logic. In Hacker's Delight, veteran programmer Hank Warren
shares the tricks he has collected from his considerable experience in the worlds of
application and system programming. Most of these techniques are eminently
practical, but a few are included just because they are interesting and unexpected. The
resulting work is an irresistible collection that will help even the most seasoned
programmers better their craft.
Topics covered include:
• A broad collection of useful programming tricks
• Small algorithms for common tasks
• Power-of-2 boundaries and bounds checking
• Rearranging bits and bytes
• Integer division and division by constants
• Some elementary functions on integers
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000
• Gray code
• Hilbert's space-filling curve
• And even formulas for prime numbers!
This book is for anyone who wants to create efficient code. Hacker's Delight will help
you learn to program at a higher level-well beyond what is generally taught in schools
and training courses-and will advance you substantially further than is possible
through ordinary self-study alone.
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Copyright
Copyright
Many of the designations used by manufacturers and sellers to distinguish their products are claimed as
trademarks. Where those designations appear in this book, and Addison-Wesley was aware of a trademark
claim, the designations have been printed with initial capital letters or in all capitals.
The author and publisher have taken care in the preparation of this book, but make no expressed or implied
warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental
or consequential damages in connection with or arising out of the use of the information or programs contained
herein.
The publisher offers discounts on this book when ordered in quantity for special sales. For more information,
please contact:
U.S. Corporate and Government Sales
(800) 382-3149
corpsales@pearsontechgroup.com
For sales outside of the U.S., please contact:
International Sales
(317) 581-3793
international@pearsontechgroup.com
Visit Addison-Wesley on the Web: www.awprofessional.com
Library of Congress Cataloging-in-Publication Data
Warren, Henry S.
Hacker's delight / Henry S. Warren, Jr.
p. cm.
Includes bibliographical references and index.
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Copyright
1. Computer programming. I. Title.
QA76.6 .W375 2002
005.1—dc21
2002066501
Copyright © 2003 by Pearson Education, Inc.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted,
in any form, or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior
consent of the publisher. Printed in the United States of America. Published simultaneously in Canada.
For information on obtaining permission for use of material from this work, please submit a written request to:
Pearson Education, Inc.
Rights and Contracts Department
75 Arlington Street, Suite 300
Boston, MA 02116
Fax: (617) 848-7047
Text printed on recycled paper
1 2 3 4 5 6 7 8 9 10—MA—0605040302
First printing, July 2002
Dedication
To Joseph W. Gauld, my high school algebra teacher, for sparking in me a delight in the simple things in
mathematics.
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