DatumGetPeriod DatumGetPeriodSet DatumGetTimestampSet PeriodGetDatum PeriodSetGetDatum PG_GETARG_PERIOD PG_GETARG_PERIODSET PG_GETARG_TIMESTAMPSET PG_RETURN_PERIOD PG_RETURN_PERIODSET PG_RETURN_TIMESTAMPSET TimestampSetGetDatum

PG_GETARG_PERIOD #define PG_GETARG_PERIOD (   X )    DatumGetPeriod(PG_GETARG_POINTER(X))