This page is about a technique for reducing the memory footprint of programs in compiled languages with C-like structures - manually repacking these declarations for reduced size. To read it, you will require basic knowledge of the C programming language. You need to know this technique if you intend to write code for memory-constrained embedded systems, or operating-system kernels. It is useful i
C Pre-Processor Magic The C Pre-Processor (CPP) is the somewhat basic macro system used by the C programming language to implement features such as #include and #define which allow very simple text-substitutions to be carried out at compile time. In this article we abuse the humble #define to implement if-statements and iteration. Before we begin, a disclaimer: these tricks, while perfectly valid
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