Decimal floating-point built-in functions
Decimal floating-point (DFP) built-in functions are grouped into
the following categories:
- Absolute value functions
- Comparison functions
- Comparison functions
- Conversion functions
- Exponent functions
- NaN functions
- Register transfer functions
- Rounding functions
- Test functions
For binary floating-point built-in functions, see Binary floating-point built-in functions
When -qarch is set to pwr6, pwr6e, or later POWER® processors, -qfloat=nodfpemulate becomes
the default. This means that DFP hardware instructions are generated.
Lower-performance software emulation code is generated only when:
- -qarch is set to pwr5.
- -qarch is set to pwr6, pwr6e, or later processors, and -qfloat=dfpemulate is enabled
Note: 
In the prototypes given in the following
sections, the C keyword _Bool is used by convention
to represent a Boolean type.
In the prototypes given in the following
sections, the C keyword _Bool is used by convention
to represent a Boolean type.
