HALCON Extension Package Programmer's Manual

38 CHAPTER 3. STYLE GUIDE FOR PROGRAMMINGType Size C-Data Type1 byteÁÆÌ or ÍÁÆÌ2 byteInteger3 byteÁÆÌ or ÍÁÆÌ 4 byteFloating-point Number ÓÙÐ3.1.2 Procedure ParametersParameters of procedures should be of the following types within HALCON:Type Size C-Data TypeInteger1 byte2 byteÁÆÌ3 byte4 byteÁÆÌ Floating-point Number ÓÙÐStructure pointer3.1.3 ArraysFor arrays or structures (i.e. larger sets) always the smallest possible data type should be used.Type Size C-Data Type1 byte ÁÆ̽2 byte ÁÆ̾ oder ÍÁÆ̾Integer3 byteÁÆÌ oder ÍÁÆÌ4 byte4 byte ÐÓØFloating-point Number8 byte ÓÙÐStructurepointer3.2 Memory ManagementHALCON provides a sophisticated memory management not only to handle iconic objects,but also to allocate/deallocate arbitrary data. Please use the corresponding HALCON ExtensionPackage Interface routines exclusively. Do not create/destroy memory blocks on the heapwith the standard routines of the operating system (like ÑÐÐÓ and Ö) since the HALCONroutines provide a caching mechanism, garbage collection for temporary data, and debuggingfacilities.We strongly recommend not do use global variables within HALCON operators. If they arenot avoidable at least make them ×ØØ within the file of usage. If even this is undesirablegroup them into structures to keep the number of global names small.HALCON Extension Package Interface / 2000-11-16