In ../TESTS, the file icb_arpack_c.c is an example of how to call arpack from C. In ../TESTS, the file icb_arpack_cpp.cpp is an example of how to call arpack from C++.
In ../TESTS, the file icb_arpack_c.c is an example of how to call arpack from C. In ../TESTS, the file icb_arpack_cpp.cpp is an example of how to call arpack from C++.