Hacker's Delight
Hacker's Delight (ISBN 978-0-201-91465-8) by Henry S. Warren, Jr., is a book published by Addison-Wesley Professional on July 17, 2002. It discusses a variety of programming algorithms for common tasks involving integer types, often with the aim of performing the minimum number of operations or replacing slow operations by faster ones (e.g., converting a divide by a constant into a multiply by another constant that gives the same result).
The first edition of the book is currently in its seventh printing, with a second edition released in September 2012.