Re: Procedure Problem

Thanks To Ron and Pete for Your input. I will try a few things with the
information you guys have given me. Have a happy New Year. Wayne Achenbaum

----- Original Message -----
From: Ron Hawkins <hwarangron@home.com>
To: <MIDRANGE-L@midrange.com>
Sent: Thursday, December 30, 1999 6:33 PM
Subject: RE: Procedure Problem


> this is the way I did it:
>
> P  Centerfld      B                   export
> d  CenterFld      PI         32766    opdesc
> d  FieldToCtr                32766    options(*varsize)
>
>  *-----------------------------------------------------------------*
>  * Prototype for CEEDOD (Retrieve operational descriptor)
>  *-----------------------------------------------------------------
> D CEEDOD          PR
> D ParmNum                       10I 0 CONST
> D                               10I 0
> D                               10I 0
> D                               10I 0
> D                               10I 0
> D                               10I 0
> D                               12A   OPTIONS(*OMIT)
> C                   CALLP     CEEDOD(1         :DescType:DataType:
> C                               DescInfo1 : DescInfo2: Inlen:
> C                               *OMIT)
> c                   eval      X = InLen
>
> the calling program could do this:
>
> c                   eval      Field40 = CenterFld(Field40)
>
> HTH
> Ron
>
> -----Original Message-----
> From: owner-midrange-l@midrange.com
> [mailto:owner-midrange-l@midrange.com]On Behalf Of Wayne Achenbaum
> Sent: Thursday, December 30, 1999 1:11 PM
> To: MIDRANGE-L@midrange.com
> Subject: Procedure Problem
>
>
> I have been watching the debate on the correct way to code the centering
> procedure. I also can't seem to get it to work the way that I want to.
What
> I would like to accomplish is, to allow a caller to use the following
code.
>
> *--------------------------------------------------------------------*
> * Calling Module
> *
> *--------------------------------------------------------------------*
> C                   eval      Ctrfld = $Center(Entryfld)
>
> The problem I am trying to overcome is that I want the calling module to
be
> oblivious to size and not have to know about defining a varying size
> variable to center. I tried all the permeatations that I could conceive
of.
> My module does not compile with Entryfld defined as 50a.
>
> Can Anyone help with the definition of the field as parameter 1? I tried
> Const (*varsize) that didn't work. How can I overcome the parameter type
> mismatch if at all. TIA
>
>
> The Following is a snip from a string utility service Program that works
as
> long as the parameter is some variable of any size up to and icluding size
> 256 that is of type varying.
>
>  *--------------------------------------------------------------------*
>  * Prototype for $Center procedure
> *
>  *--------------------------------------------------------------------*
> d $Center        PR           256a   varying
>
> d InputData                       256a   Varying Options(*Varsize)
>
>  *--------------------------------------------------------------------*
>  * $Center procedure
> *
>  *--------------------------------------------------------------------*
> p $Center        B                    Export
>  *
> d $Center        PI          256a   Varying
> d Field_In                      256a   Varying Options(*Varsize)
> *
> d Half                s              3s 0
> d Len                 s              3s 0
> d Size_In           s              3s 0
> d Start               s              3s 0
> d Field_Out     s            256a
>  *
> c     ' '           Checkr(E) Field_In      Len
> c                   Eval      Size_In = %Len(Field_In)
>  *
> c                   If        %Found
> c                   Eval      Half = %Div(Len:2)
> c                   Eval      Start = (((Size_In) /2)
> c                                      +1) - Half
> c                   eval      %Subst(Field_Out : Start : Len) =
> c                             %subst(Field_In : 1 : Len)
> c                   Return    Field_Out
>  *
> c                   Else
>  *
> c                   Return    Field_In
> c                   EndIf
>  *
> p $Center        E
>
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