Experimental Physics and
Industrial Control System

Kay-Uwe Kasemir <[email protected]> · Wed, 20 Jul 2005 09:08:42 -0400

Hi:

Where are we with the type enum?
Before the APS meeting,
Ben & Ralph had suggested a type descriptor
similar to what John Sinclair and I
implemented for EDM:

    typedef struct
    {
        // Character of this PV
        enum { real, integer, enumerated, text, special } type;
        // real ... enumerated: bit size
        // text               : max length, 0 for variable length
        // special            : no clue
        size_t size;
        // Human-readable description. Currently supported:
        // "integer:32"
        // "real:64"  for double
        // "enumerated:16"
        // "text:0"
        const char *description;
    } Type;

... with added info for structs and arrays.

At the APS meeting, Marty presented a simple enum:
   int16
   int32
   uint16
   uint32
   array
   struct
   ...
... which would require additional calls in case you find
an array or struct.
He recently tried to nail the contents down,
when Ben raised concerns which I didn't fully understand.

Now what?

Thanks,
Kay

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System