Rounding question

[brian_matthewsbrian matthews]

I always read that Cognos claimed the server architecture was to blame for 
the inaccuracy of float size 4 items, but this shows that even fieldvalue 
will hit the problem, and clearly the fieldvalue has'nt yet touched the disk 
- I wonder what happened to the so-called six dp accuracy for 4 byte floats 
and how can this be claimed when even the window to the disk storage is 
flawed before anything is written - no doubt this is an old ph7 specific bug 
:)

regards Bri,




>From: Guy Werry <guy.werry@hbms.ca>
>To: "PH Mailing List (E-mail)" <powerh-l@lists.sowder.com>
>Subject: RE: Rounding question
>Date: Tue, 3 May 2005 14:13:20 -0500
>
>Thanks once again, Listers!
>
>Yes, this was the problem ... the floating point math winds up giving me
>0.149999999 instead of 0.015.
>
>So, I now do my round as:
>	ROUND(FIELDVALUE + 0.000001,NUM-DECIMALS,NEAR)
>and this works fine.
>
>Of course, the reason I've never had issues like this with COBOL is that
>COBOL does its internal math in (I think) packed decimal, not float.
>
>Thanks again,
>Guy L. Werry
>Senior Systems Analyst
>Hudson Bay Mining & Smelting Co., Limited.
>
>
>-----Original Message-----
>From: David Morrison - Corporate [mailto:dmorrison@mcbrideelectric.com]
>Sent: Tuesday, May 03, 2005 10:56 AM
>To: Guy Werry; PH Mailing List (E-mail)
>Subject: RE: Rounding question
>
>
>Guy,
>
>How about adding something like .0000000001 to inp_val, prior to rounding?
>
>Thanks.
>
>David Morrison
>McBride Electric
>
>-----Original Message-----
>From: powerh-l-admin@lists.sowder.com
>[mailto:powerh-l-admin@lists.sowder.com]On Behalf Of Guy Werry
>Sent: Tuesday, May 03, 2005 8:47 AM
>To: PH Mailing List (E-mail)
>Subject: Rounding question
>
>
>Ph 7.33.D3, Ux 10.20
>
>The rounding function is giving me fits.  Specifically, I have a value in a
>FLOAT data item and was rounding it like this:
>	round(inp_val,3,near)
>
>So I'm trying to round to 3 decimals.  If I enter 0.0015, it rounds DOWN to
>0.001!
>
>I have tried various combinations of the "multiply by 1000, round it, 
>divide
>by 1000" rigamarole, with no success.
>
>Is there a clean, neat solution to this?  Is there some way of telling the
>stupid thing to round UP on that 5?  Note that the "UP" and "DOWN" options
>don't give the results that I need.
>
>[The frustration mirrored here is largely due to the fact that COBOL rounds
>wonderfully and predictably and I've NEVER found another language that 
>could
>round its way out of a wet paper bag!]
>
>Thanks,
>Guy L. Werry
>Senior Systems Analyst
>Hudson Bay Mining & Smelting Co., Limited.
>
>
>
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