chenxublog.com
Bit Twiddling Hacks 中文翻译（进行中。。。） | 晨旭的博客~
https://www.chenxublog.com/2016/03/17/bit-twiddling-hacks-chinese.html
Bit Twiddling Hacks 中文翻译 进行中。 由晨旭不负责任地胡乱翻译 powered by Google translate and Baidu translate. Sign extending from a constant bit-width. Sign extending from a variable bit-width. Sign extending from a variable bit-width in 3 operations. Conditionally set or clear bits without branching. Conditionally negate a value without branching. Merge bits from two values according to a mask. Counting bits set, naive way. Counting bits set by lookup table. Counting bits set, Brian Kernighans way. Modulus division (aka ...
graphics.stanford.edu
Bit Twiddling Hacks
http://graphics.stanford.edu/~seander/bithacks.html
By Sean Eron Anderson. Individually, the code snippets here are in the public domain. Unless otherwise noted) — feel free to use them however you please. The aggregate collection and descriptions are 1997-2005 Sean Eron Anderson. The code and descriptions are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY. The Dean of Computer Science at Carnegie Mellon University, has personally tested almost everything with his Uclid code verification system. Compute the sign of an integer.
jaydeep-patil.blogspot.com
Jaydeep Patil: July 2011
http://jaydeep-patil.blogspot.com/2011_07_01_archive.html
Technology, Google, Microsoft, .NET, Tips and Tricks, Trekking, Make better life, Inspiration, Motivation. Original Post at http:/ graphics.stanford.edu/ seander/bithacks.html. About the operation counting methodology. Compute the sign of an integer. Detect if two integers have opposite signs. Compute the integer absolute value (abs) without branching. Compute the minimum (min) or maximum (max) of two integers without branching. Determining if an integer is a power of 2. Counting bits set, naive way.
