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RTL Differences

When porting a C application, all of the RTL routine calls will need to be changed, due to the addition of the C-language interface. A portable application must use the C-language interface. Although using the old Fortran interface will work under VMS, it works only under VMS. A C application using the Fortran interface simply will not work on any other machine.

The new RTL calling sequence is described in detail in Section , RTL Calling Conventions. As a reminder, the highlights are listed again below.