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In real time engineering usualy the clock rate is a parameter which is needed in calculations. Therefore it would be useful to be able to access that rate as integer (or float). It is clear, especially in fpga-programming that the clock (and its rate) is not a variable, that can be chosen by the application user. This idea is rather about code development in order to avoid bugs. In the current situation I am forced to define a seperate constant copying the clock rate; in the course of later code changes I risk to forget to change that constant, when changing the clock.
For the same reason it would be useful to be able to access a clock refernce of an fpga-vi (an with it its rate) form the calling vi.