An enum used in conjunction with smc_get_dataitem_type to identify physical type of performance data results:
SMC_DI_TYPE_NONE
SMC_DI_TYPE_CHARP
SMC_DI_TYPE_DATIM
SMC_DI_TYPE_DOUBLE
SMC_DI_TYPE_ENUMS
SMC_DI_TYPE_INT
SMC_DI_TYPE_LONG
