A Fortran function must be linked with the /iface:stdref calling convention
option. When a Fortran function is called by a C/C++ subroutine, the function and
variables in the function will be treated under the rule of
STDCALL and REFRENCE. The option of name
case interpretation must be defined as /names:uppercase. For Intel
Visual Fortran, these options can be defined in the project property page as shown
in the figure below.
