Previous: Porting Fortran Up: Porting Fortran Next: Include Files

RTL Differences

When porting a Fortran application, most of the RTL routine calls will need to be modified slightly, due to the need for an argument list terminator and the elimination of optional arguments. A portable application must use the new rules below when calling the RTL. Although following the old calling conventions instead will work under VMS, they will work only under VMS. To be portable, the new conventions must be used.

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