× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.



Supposedly its first run uses the time as the seed.


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Bob P. Roche
Sent: Friday, March 16, 2007 10:40 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Random Numbers

I'm not sure exactly how this works, but what data is coming from the 
SEEDPF could the seednum parameter have something to do with the range?



"Wilt, Charles" <WiltC@xxxxxxxxxx> 
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
03/16/2007 10:09 AM
Please respond to
RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>


To
"RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
cc

Subject
RE: Random Numbers






Remember that it is floating point...

Perhaps it was 8.7658... x10^-1 

Which would be .87658....


Charles


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] 
On Behalf Of Doug Palme
Sent: Friday, March 16, 2007 11:03 AM
To: 'RPG programming on the AS400 / iSeries'
Subject: RE: Random Numbers

I stepped through it in debug and the last test showed a value of 
8.7658...


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Wilt, Charles
Sent: Friday, March 16, 2007 10:02 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Random Numbers

You sure about that? 

Are you calling it correctly?

Are you using an 8 byte floating point variable to hold the returned 
value?


If yes to all the above, call IBM as the docs say:

"The Basic Random Number Generation (CEERAN0) API generates a sequence of 
uniform pseudorandom numbers
between 0 and 1 using the multiplicative congruential method with a 
user-specified seed."



Charles

 

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Doug Palme
Sent: Friday, March 16, 2007 10:53 AM
To: 'RPG programming on the AS400 / iSeries'
Subject: 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.

--
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 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.


As an Amazon Associate we earn from qualifying purchases.

This thread ...

Follow-Ups:
Replies:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.