HP Fortran Programmer's Guide (March 2010)

Fortran 2003 Features
Interoperability with C
Chapter 12264
Interoperability with C
HP-UX fortran compiler supports the fortran 2003 standard mechanism to allow
communication between fortran code and C code. The intrinsic module ISO_C_BINDING
contains named constants that hold kind type parameter values for intrinsic types for
interoperability between C and Fortran. Interoperability of Intrinsic types, C pointers,
Derived types, Variables, global data and procedures are supported in the HP-UX fortran
compiler.
Currently, the C function pointers are not interoperable with Fortran.