sum of double values not the same after re-fetch from dbase 
Author Message
 sum of double values not the same after re-fetch from dbase


Using MSVC 4.1 on NT and MS SQLServer 6.0, we are experiencing the
following problem with the summing of double

double variable adSum is a sum of n double values.  It has to be compared
to adLimitSum, which is another double value.

After the individual values which sum up to adSum are saved to the database
and retrieved, the newly calculated adSum value is slightly greater than it
was before the save.  Hence, the comparison fails.

We need to come up with some tolerance value within which the sum should
be.  Using the above compiler and database, how should this tolerance be
defined?  It probably will need to take into account the value of n.

Any help would be appreciated.  Please e-mail a copy of the response to:

Ahsan ul Haque
MCM, Inc.

Mon, 25 Oct 1999 03:00:00 GMT  
 [ 1 post ] 

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