Test functions allow extended exception handling of invalid results or categorization of input values, primarily to support math library functions.
Those functions that begin with __d64_is or __d128_is will not raise an exception, even for signaling NaNs.
| Macro | Integer value |
|---|---|
| DFP_PPC_DATA_CLASS_ZERO | 0x20 |
| DFP_PPC_DATA_CLASS_SUBNORMAL | 0x10 |
| DFP_PPC_DATA_CLASS_NORMAL | 0x08 |
| DFP_PPC_DATA_CLASS_INFINITY | 0x04 |
| DFP_PPC_DATA_CLASS_QUIET_NAN | 0x02 |
| DFP_PPC_DATA_CLASS_SIGNALING_NAN | 0x01 |
| Macro | Integer value |
|---|---|
| DFP_PPC_DATA_GROUP_SAFE_ZERO | 0x20 |
| DFP_PPC_DATA_GROUP_ZERO_WITH_EXTREME_EXPONENT | 0x10 |
| DFP_PPC_DATA_GROUP_NONZERO_WITH_EXTREME_EXPONENT | 0x08 |
| DFP_PPC_DATA_GROUP_SAFE_NONZERO | 0x04 |
| DFP_PPC_DATA_GROUP_NONZERO_LEFTMOST_DIGIT_NONEXTREME_EXPONENT | 0x02 |
| DFP_PPC_DATA_GROUP_SPECIAL | 0x01 |