*
* Where possible, on alternative compilers, these macros will either have no effect, or default to returning a sane value
* so that they can be used in existing code without the need for extra compiler checks in the user application code.
*
* Where possible, on alternative compilers, these macros will either have no effect, or default to returning a sane value
* so that they can be used in existing code without the need for extra compiler checks in the user application code.