[futurebasic] FB^3 math accuracy

Message: < previous - next > : Reply : Subscribe : Cleanse
Home   : September 1999 : Group Archive : Group : All Groups

From: Doug Stemen <stemenda@...>
Date: Wed, 22 Sep 1999 06:43:57 -0400
The BCD math in FB II could induce math errors in simple addition and
subtraction calculations. For example, my program works extensively with
dollar and cent calculations, but sometimes simple calculations would
incorrectly produce fractional cent results. Thus, I have to always use
extra steps to truncate or round results to eliminate incorrect
fractional cents.

On page 29 of the FB^3 conversion document it cautions that instead of
using IF a#=10000.01 one should use IF a#>10000.01 to test for matches.

Unfortunately, I need the ability to have exact matches to the penny
(like IF a#=10000.01). Does this statement in the document imply that
FB^3 will have problems with this?

Will FB^3 still suffer the same BCD math errors I experienced with FB


Doug Stemen