Setting an array to zero length

["Rogers, Will \(DLSLtd, RAL, LSCI\) via Tech-talk" <tech-talk at aps.anl.gov>]

I suspect that this may not be a simple question, but:

• If I create a waveform WAVE with a soft IOC of length 10, it has WAVE.NELM as 10 and WAVE.NORD as 0
• If I caput 5 elements to it (e.g. with Cothread) it has WAVE.NELM as 10 and WAVE.NORD as 5
  

Is there a way to restore it to its uninitialised state with WAVE.NORD as 0? How general could this be for different record types?

The intention is for a save-and-restore type application (Pyburt) - if we save a PV when it is uninitialised we would like the restore process to return it to that state.

Thanks,

Willl

 

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