Скачать или смотреть Understanding Bit-Shifting Operators

This video is an extremely beginner-friendly introduction to how bitshifting works & how bitshifting was useful in older game programming code.

We'll start by taking a look at the math behind positional notation, and how bitshifting in code can be used as multiplication and division by 2.

We'll also look at some examples of bitshifting in the source code of Wolfenstein 3D (https://github.com/id-Software/wolf3d).

Chapters:
00:00:00 Introduction
00:02:40 Counting numbers
00:08:23 Multiplication in base 10
00:14:34 Division in base 10
00:19:56 Multiplication & Division in base 2
00:29:27 Shifting left & right in older CPUs
00:36:12 Examples of code
00:47:13 Arithmetic vs. logical shifts
00:54:13 Relevance of bit-shifting nowadays

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Enjoy!