librdx

Procedures

ABC treats functions and procedures differently.

ABC functions are

1. inlinable,
2. perform computations that don’t fail,
3. return the result.

PRO.h defines helper macros for procedures that:

1. can be inlined, but not necessarily,
2. can fail,
3. return ok64.

You can write and invoke ABC procedures without using PRO macros. You may not use this convention at all. As every ABC component, this one is orthogonal and optional.

Note that PRO macros also allow for fine-grained tracing of the call stack.