The API_CalcUnitPrefs structure contains this structure.
    typedef struct {
        API_UnitTypeID          unit;
        API_ExtraAccuracyID     accuracy;
        short                   decimals;
        short                   roundInch;
        Int32                   filler_1;
    } API_CalcFormat;
    
Members
- unit
- The type of the length measurement unit.
- accuracy
- European methods for rounding decimal values.
- decimals
- Number of decimals for length measurement unit [0..4]
- roundInch 
- Fractions in case of the unit is feet or fractional inches [None, 1/2, 1/4,…1/64]
Remarks
none
Requirements
- Version: API 4.1 or later
- Header: APIdefs_Environment.h