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How can I call FORTRAN?
How can I call FORTRAN?
✍: Guest
Q: How can I call FORTRAN (C++, BASIC, Pascal, Ada, LISP) functions from C? (And vice versa?)
A: The answer is entirely dependent on the machine and the specific calling sequences of the various compilers in use, and may not be possible at all. Read your compiler documentation very carefully; sometimes there is a ``mixed-language programming guide,'' although the techniques for passing arguments and ensuring correct run-time startup are often arcane. Besides arranging calling sequences correctly, you may also have to conspire between the various languages to get aggregate data structures declared compatibly.
In C++, a "C" modifier in an external function declaration indicates that the function is to be called using C calling conventions.
In Ada, you can use the Export and Convention pragmas, and types from the package Interfaces.C, to arrange for C-compatible calls, parameters, and data structures.
2015-01-12, 1287👍, 0💬
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