Procedures / Functions

Procedures / functions will normally define combinatorial logic. However will you properly need some conversions functions as well.
A conversion function will not result in extra hardware.

The difference between functions and procedure can be seen by the fact that functions must return data.

If you wants to return more then one parameter could inout attributes turn out useful.

Example with the procedure defined in a package


	Will select the leftmost index in the vector like the Max index

	Will give the number of elements in the vector
		will create a vector with all zeros
		will create a vector with all ones

	Example with the procedure code implemented as part of a Package and used in an Architecture



	Example with the procedure implemented as part of the architecture



	Example with the procedure code implemented as part of the Process