Enhancement in precision of calculations with NUMERIC/DECIMAL
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Key: CORE-4409
URL: http://tracker.firebirdsql.org/browse/CORE-4409
Project: Firebird Core
Issue Type: Improvement
Components: Engine
Affects Versions: 3.0 Alpha 2, 3.0 Alpha 1, 2.5.2 Update 1, 2.1.5 Update 1,
2.5.2, 2.1.5
Environment: Dialetic 3 databases
Reporter: Carlos H. Cantu
The way Firebird deals with the precision of the results of calculations
involving multiple arguments can easily cause overflows, specially in
maths/divs, when the precision of the result is the sum of the precision of the
arguments, what can easily extrapolate the actual limits of the currently
numeric/decimal datatypes. Also, some care is needed in the intermediate
calculations, to avoid loss of precision and overflows.
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