RE: Random Numbers

Actually it is returning a value between 1 and < 10



-----Original Message-----
From: rpg400-l-bounces+dpalme=hdsmith.com@xxxxxxxxxxxx
[mailto:rpg400-l-bounces+dpalme=hdsmith.com@xxxxxxxxxxxx] On Behalf Of Wilt,
Charles
Sent: Friday, March 16, 2007 9:52 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Random Numbers

Doug,

CEERAN0 returns a floating point value between 0 and 1.

So to get a number between 1 and 1000, simply multiple the value returned by
CEERAN0 by 1000

HTH,
Charles
 

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Douglas Palme
Sent: Friday, March 16, 2007 10:41 AM
To: 'RPG programming on the AS400 / iSeries'
Subject: Random Numbers

I have been looking for a random number generator for RPG and found an
example on IBM's website.  I
know that with other languages I can specify that I want the random numbers
that are generated to fall
within a specified range, IE: between 1 and 1000.

Here is the code that IBM suggested:

Fseedpf    uf   e             disk    usropn            
F                                                       
Frandpf    o    e             disk    usropn            
F                                                       
DTimes            c                   const(1000)       
Dfactor           c                   const(10000000000)
D                                                       
Dstdpacked        s             15p 5                   
Dstdint           s             10i 0                   
Dstddouble        s              8f                     
Dstdfc            s             12a                     
D                                                       
Drandnum_gen      pr                  extproc('CEERAN0')
Dpr_seed                              LIKE(stdint)      
Dpr_randum                            like(stddouble)   
Dpr_fc                                like(stdfc)       
D                                                    
Dcounter          s                   like(stdint)   
D                                                    
Dseednum          s                   like(stdint)   
D                                                    
Drandnum          s                   like(stddouble)
Dfeedbackcode     s                   like(stdfc)    
D                                                    
C                   open      seedpf                 
C                   open      randpf                                   
C                                                                      
C                   read      seedrec                                  
C                   eval      seednum = %rem(seedfld:factor)           
C                   for       counter = 1 by 1 to times                
C                   callp     randnum_gen(seednum:randnum:feedbackcode)
C                   eval      randfld = randnum                        
C                   write     randrec                                  
C                   endfor                                             
C                   eval      seedfld = seednum
C                   update    seedrec          
C                   close     randpf           
C                   close     seedpf           
C                   eval      *inlr = *on      

Maybe I am blinding myself here, but with using the C API, I do not see any
way of setting a range.

Has anyone else performed such an operation before? If so, how did you
specify the lower and upper
range?
 




****************************************************************************
This transmission may contain information that is privileged, Confidential
and/or exempt from
disclosure under applicable law.
If you are not the intended recipient, you are hereby notified that any
disclosure, copying,
distribution, or use of the information contained herein (including any
reliance thereon) is STRICTLY
PROHIBITED. If you received this transmission in error, please immediately
contact the sender and
destroy the material in its entirety, whether in electronic or hard copy
format. Thank you.
****************************************************************************

--
This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list
To post a message email:
RPG400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives at
http://archive.midrange.com/rpg400-l.




This e-mail transmission contains information that is intended to be
confidential and privileged.  If you receive this e-mail and you are not a
named addressee you are hereby notified that you are not authorized to read,
print, retain, copy or disseminate this communication without the consent of
the sender and that doing so is prohibited and may be unlawful.  Please
reply to the message immediately by informing the sender that the message
was misdirected.  After replying, please delete and otherwise erase it and
any attachments from your computer system.  Your assistance in correcting
this error is appreciated.