The ccv library, created in 2010 and still actively maintained, offers a highly portable C‑based computer‑vision toolkit with minimal dependencies, a built‑in cache for preprocessing, a full libnnc neural‑network runtime, and easy builds via Bazel, Make, or Swift Package Manager.
This article introduces cJSON, a tiny open‑source C library designed for embedded systems, explains its core features, shows how to create, parse, and manipulate JSON data on microcontrollers, and provides practical code examples for configuration management, command handling, and data logging.
libjpeg, the open‑source C library from the Independent JPEG Group, provides comprehensive JPEG encoding and decoding capabilities, explains JPEG format fundamentals, details its modular architecture, demonstrates encoding/decoding code examples, and guides cross‑compiling on Ubuntu 16.04 with configuration and make steps.
This guide introduces libevent, a lightweight C library for high‑performance event notification, explains its core concepts and features, provides step‑by‑step installation and compilation instructions, demonstrates sample programs like hello‑world and http‑server, and outlines common use cases in networking.
This article explains the concept of system calls, how they provide a privileged interface between user programs and the kernel, distinguishes them from APIs and library functions, and describes their role in Linux operating‑system architecture and application development.
This article explains the GCC compiler suite, its internal packages (Binutils, gcc‑core, Glibc), demonstrates a simple C build, and details cross‑compilation techniques for ARM, including differences between arm‑linux‑gcc, arm‑elf‑gcc, and various C libraries such as uClibc and newlib.
This article explains the GNU Compiler Collection (GCC) architecture, its core packages (Binutils, gcc‑core, Glibc), demonstrates a simple C compilation workflow, and details cross‑compilation techniques for ARM including arm‑linux‑gcc, arm‑elf‑gcc, and various C libraries such as uClibc and newlib.
JavaScript’s NaN represents undefined numeric results, appears when operations like Math.sqrt(-1) occur, has multiple binary forms, and is distinguished as Quiet or Signaling; because NaN !== NaN, comparisons rely on special checks such as isnan, with implementations varying across environments like V8 and Apple’s C library.
