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Nope none at all, I was actually going to use that in the end......this was
a whole new experience for me, so I was working somewhat blind at first.

Thanks though Gary excellent thought and idea.


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Gary_Jones@xxxxxxxxxxxxxxxxxx
Sent: Monday, March 19, 2007 2:27 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Random Numbers

Hey Doug,

Any reason you can't use embedded SQL to achieve this?

/exec sql    set :randNumber = int(rand()*1000)
/end-exec


Cheers

Gary



"Doug Palme" <dpalme@xxxxxxxxxxx> 
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
03/16/2007 02:10 PM
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






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?
 




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