RE: random alpha/numeric generator

[Tom Daly <Tdaly@xxxxxxxxxxxxxx>]

Bob,

Well this comes under the heading of neat things found while looking for
something else.

In "IBM Distributed Computing Environment Version 2.2, Base Services for
AS/400: Getting Started" SC41-5601-00  in  C.7 Generating Universal Unique
Identifiers (UUID) it's briefly mentioned.  The prototype is in
QSYSINC/MIH.GENUUID - I don't know if the member description text is correct
or not.   There's more detail about it in the MI manual.  (even though I've
never written any real MI pgms this was a worthwhile book to get)

I think all the APIs that start with underscore are really MI builtin
functions.  When the compiler sees  CallB  to one of these it inlines the MI
into the RPG object... inline assembler in your RPG.  I'm not 100% sure on
this though.


Tom


 |  -----Original Message-----
 |  From: Bob Cozzi (RPGIV) [mailto:cozzi@rpgiv.com]
 |  Sent: Thursday, November 08, 2001 15:01
 |  To: rpg400-l@midrange.com
 |  Subject: RE: random alpha/numeric generator
 |
 |
 |  Tom,
 |
 |  Where are the underscore APIs documented, such as _GENUUID?
 |  I don't see
 |  them in the System API manual.
 |
 |  Bob Cozzi
 |  cozzi@rpgiv.com
 |  Visit the new on-line iSeries Forums at: http://www.rpgiv.com/forum
 |
 |  > -----Original Message-----
 |  > From: rpg400-l-admin@midrange.com
 |  [mailto:rpg400-l-admin@midrange.com]
 |  On
 |  > Behalf Of Tom Daly
 |  > Sent: Thursday, November 08, 2001 1:38 PM
 |  > To: 'rpg400-l@midrange.com'
 |  > Subject: RE: random alpha/numeric generator
 |  >
 |  > If you want to generate unique ID strings you could try GENUUID.
 |  >
 |  > H   BNDDIR('QC2LE' : 'QUSAPIBD')
 |  > H
 |  > D GENUUID         PR                  EXTPROC('_GENUUID')
 |  > D  UUID_T                         *
 |  >  *
 |  > D UUID_T          DS                  ALIGN
 |  > D  BytesProv                    10U 0 inz(32)
 |  > D  BytesAvail                   10U 0 inz(0)
 |  > D  Reserved                      8    inz(*allx'00')
 |  > D  UUID                         16    inz(*allx'00')
 |  >  *
 |  >  *
 |  > C                   callb     '_GENUUID'
 |  > C                   parm                    UUID_T
 |  >  *
 |  >
 |  >  |  -----Original Message-----
 |  >  |  From: Kelly_Fucile@vfc.com [mailto:Kelly_Fucile@vfc.com]
 |  >  |  Sent: Thursday, November 08, 2001 13:51
 |  >  |  To: rpg400-l@midrange.com
 |  >  |  Subject: random alpha/numeric generator
 |  >  |
 |  >  |
 |  >  |
 |  >  |  Hi,
 |  >  |
 |  >  |  Is there a good way to create a random alpha/numeric id?
 |  >  |  Also not have it
 |  >  |  duplicate the number. We need to so this so that we
 |  can attach it
 |  to
 |  >  |  something else. We would like to be able to do it quickly
 |  >  |  and simply.
 |  >  |  Please help.
 |  >  |
 |  >  |  Thanks,
 |  >  |
 |  >  |  Kelly Fucile
 |  >  |  JanSport
 |  >  |  Programmer/Analyst
 |  >  |
 |  >  |
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 |
 |  _______________________________________________
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