c - How is this generic function is used -

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i going through code write has been made register. made generic function write different register has go through same function:

   #define rgs(x) \      static inline void write_##x(u8 val) \      { \      }  #define regw(x) rgs(x)  write_wdc(val);

now want know when call write_wdc made, how replaced these macros.

this doesn't show macro being used, in order final line (the call) work, there has like:

regw(wdc)

somewhere in code, use macro. above replaced preprocessor with:

rgs(wdc)

which in turn replaced with

static inline void write_wdc(u8 val) { }

i assume body of function missing macro declaration too, expect x = val; in there make write happen.

this uses ## preprocessor operator "glue" words together.


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