| Value | Meaning |
|---|---|
| none0U | no error |
| invalidOperation1U << 0 | InvalidOperationException is thrown if trap is set |
| divisionByZero1U << 1 | DivisionByZeroException is thrown if trap is set |
| overflow1U << 2 | OverflowException is thrown if trap is set |
| underflow1U << 3 | UnderflowException is thrown if trap is set |
| inexact1U << 4 | InexactException is thrown if trap is set |
| severeinvalidOperation | divisionByZero | overflow | group of errors considered severe: invalidOperation, divisionByZero, overflow |
| allsevere | underflow | inexact | all errors |
These flags indicate that an error has occurred. They indicate that a 0, NaN or an infinity value has been generated, that a result is inexact, or that a signalling NaN has been encountered. If the corresponding traps are set using DecimalControl, an exception will be thrown after setting these error flags.
By default the context will have all error flags lowered and exceptions are thrown only for severe errors.