Showing content from https://gist.github.com/TheServer201/9ae5322cd52f76c7d36af15d3b366762 below:
Serialization Helper ยท GitHub
/* * serial.h - Serialization helper * * DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE * Version 2, December 2004 * * Copyright (C) 2004 Sam Hocevar <sam@hocevar.net> * * Everyone is permitted to copy and distribute verbatim or modified * copies of this license document, and changing it is allowed as long * as the name is changed. * * DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE * TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION * * 0. You just DO WHAT THE FUCK YOU WANT TO. * * Why memcpy ? http://stackoverflow.com/a/32095106 */ #ifdef __cplusplus extern "C" { #endif #include <stdint.h> #include <string.h> uint16_t inline BsWord(uint16_t x){ return ((x & 0x00FF) << 8) | ((x & 0xFF00) >> 8); } uint32_t inline BsDword(uint32_t x){ return ((x & 0x000000FF) << 24) | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8) | ((x & 0xFF000000) >> 24); } #define BsData(i) ({ \ _Generic((i), \ uint16_t: BsWord(i), \ uint32_t: BsDword(i), \ default: (i)); \ }) #define ToData(o, i) ({ \ memcpy(&o, i, sizeof(i)); \ }) #define FrData(o, i) ({ \ memcpy(o, &i, sizeof(i)); \ }) #define RdData(o, i) ({ \ ToData(o, i); \ i += sizeof(o); \ }) #define WrData(o, i) ({ \ FrData(o, i); \ o += sizeof(i); \ }) #define RsData(o, i) ({ \ RdData(o, i); \ o = BsData(o); \ }) #define WsData(o, i) ({ \ i = BsData(i); \ WrData(o, i); \ }) #ifdef __cplusplus } #endif
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