embed « macro « C Q&A

1. Purpose of _never_executed()?    stackoverflow.com

I have seen this macro defined before but never really knew its purpose. Can anyone shed light on this?

2. Macro indicating I/O pins used    stackoverflow.com

I'm writing firmware for a PIC32MX, using HiTech PICC32. One of the problems I want to avoid is that since most of the pins have multiple names (eg. AN0 = RB0 ...

3. Get rid of hardware macros in embedded software    stackoverflow.com

I was working on an embedded program using C. There are tons of hardware macros like

#ifdef HardwareA 
do A 
#endif

4. What's the side effect of the following macro in C ? Embedded C    stackoverflow.com

#define MIN(A,B) ((A) <=  (B) ? (A) : (B))

least = MIN(*p++, b);