We assume that conventions exist for programs written in one language to call
routines
written in another language.
These conventions
specify how to link routines in different languages into one
program, how to call functions in a different language, how to
pass arguments between languages, and the correspondence
between basic data types in different languages. In general,
these conventions will be implementation dependent.
Furthermore, not every basic datatype may
have a matching type in other languages. For example, C/C++
character strings may not be compatible with Fortran
CHARACTER variables. However, we assume that a Fortran
INTEGER,
as well as a (sequence associated) Fortran array of INTEGERs,
can be passed to a C or C++ program.
We also assume that Fortran, C, and C++ have address-sized integers.
This does not mean that the default-size integers are the same size as
default-sized pointers, but only that there is some way to hold (and pass) a
C address in a Fortran integer.
It is also assumed that INTEGER(KIND=MPI_OFFSET_KIND) can be passed from Fortran to C as
MPI_Offset.
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MPI-2.0 of July 1, 2008
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