libnd_macros 3 LIBNETDUDE Library libnd_macros #define TV_SUB (a,b,c) #define TOUCH (x) TV_SUB#define TV_SUB(a,b,c) a : b : c : TOUCH#define TOUCH(x) { x = 0; } The macro's purpose is to touch a variable and thus shut up compiler warnings when there are unused parameters in the code. x : unused variable to be silenced.