July 2002
Intermediate to advanced
320 pages
8h 15m
English
Content preview from Hacker's Delight
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2-1. Manipulating Rightmost Bits
Some of the formulas in this section find application in later chapters.
Use the following formula to turn off the rightmost 1-bit in a word, producing 0 if none (e.g., 01011000 ⇒ 01010000):
This may be used to determine if an unsigned integer is a power of 2; apply the formula followed by a 0-test on the result.
Similarly, the following formula can be used to test if an unsigned integer is of the form 2n − 1 (including 0 or all 1’s):
Use the following formula to isolate the rightmost 1-bit, producing 0 if none ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.