Xref: utzoo comp.databases:634 comp.sys.ibm.pc:10569
Path: utzoo!utgpu!water!watmath!clyde!rutgers!orstcs!mist!nacer
From: nacer@mist.cs.orst.edu (Abdenacer Moussaoui C.)
Newsgroups: comp.databases,comp.sys.ibm.pc
Subject: DB3 III  and  MATH ??
Summary: user-defined function support in db3
Message-ID: <1971@orstcs.CS.ORST.EDU>
Date: 20 Jan 88 09:51:23 GMT
Sender: netnews@orstcs.CS.ORST.EDU
Reply-To: nacer@mist.UUCP (Abdenacer Moussaoui C.)
Distribution: na
Organization: Oregon State Universtiy - CS - Corvallis, Oregon
Lines: 35



From what I have tried there is no support for sin() cos() functions.
May be clipper supports them however I don't want to loose the interpretive
mode of db3+ at least at this stage.

(1)  I think db3+ supports some sort of object code LOADing and CALLing
     has anybody
     implementated such "basic" trig stuff in whatever (asm,c,...) ???
      
(2)  Is there such thing as user-defined function in db3+?

(3)  How to go about seting up some mem-vars to simulate predefined constants
     such as PI for example?  
     
(4)  Ideally I would like to have these suppositely constants in database
     where they could be easily modified and then set again.
     I tried a simple 2 field database with name and value fields
     then I used:
     USE CONST.DBF
     DO WHILE  .NOT. EOF()
      STORE VALUE TO &NAME		&& store value in the variable contained
     					&& in the field NAME
      SKIP
     ENDFO
     this would have been great if it worked.  I think for such thing to
     work implies that mem-vars need to be allocated on the heap and not in
     the *fixed* data-segment.
     
    
      
     

Thank you.
--nacer