Experimental Physics and
Industrial Control System

[email protected] (Jeff Hill) · Mon, 14 Dec 1998 19:32:02 -0700

On Monday, December 14, 1998 6:17 PM, Stephen Pate [SMTP:[email protected]] wrote:
> Dear Tim
> 	Thanks for your prompt answer -- I am a little confused, still...
> 
> On Mon, 14 Dec 1998, Tim Mooney wrote:
> 
> > 
> > Just adding a PREC field won't do anything at all because medm doesn't
> > actually look at that field.  Display precision is determined by what the
> > record-support function get_precision() says when it's called and asked
> > (separately) about each field medm wants to display.  PREC is just a
> > convenient, standard way for the database developer or user to give
> > get_precision() a default answer. 
> 
> Well, is medm (via channel access) calling get_precision() and thereby
> indirectly looking at the .PREC field? 

yes

> If adding the .PREC field is not the answer, what is?  Do I need both to
> (1) add the .PREC field and also (2) change something in the record
> support to make sure get_precision() is being called? 
> > 
> 

Your record's get_precision() will be called by dbCommon. You should only 
need to modify record support so that it returns the value in the .PREC field.

Jeff

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System