The size of a structure and its alignment directly affect memory and performance; understanding alignment rules, the reasons for padding, and the behavior of bitfields can help write smaller, more efficient, and portable C code. Memory layout of a structure Why Care About the Memory Layout of Structures • In network protocols, binary files, drivers, … Read more
In daily programming, we often encounter the following issue: file names <span>1.jpg</span>, <span>2.jpg</span>, <span>10.jpg</span>, <span>20.jpg</span> are completely disordered in the file manager, with <span>10.jpg</span> appearing before <span>2.jpg</span>. Or when generating reports, the varying lengths of numbers lead to inconsistent output, affecting readability. Additionally, when constructing URLs for web scraping, we need to generate links in … Read more
We know that the Fast Fourier Transform (FFT) is an important mathematical tool in signal processing. Generally speaking, the result of the Discrete Fourier Transform (DFT) of a signal with N points will also have N data points in the frequency domain. However, in practical applications, performing FFT on a signal often involves the issue … Read more