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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. 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