intersci — scilab tool to interface C of Fortran functions with scilab
All scilab primitive functions are defined in a set of interface routines. For each function the interfacing code checks first number of rhs and lhs arguments. Then it get pointers on input arguments in the Scilab data base and checks their types. After that it calls procedure associated with Scilab functions, checks returned errors flags and set the results in the data base.
intersci\ is a program which permits to interface automatically FORTRAN
    subroutines or C functions to Scilab
    With intersci, a user can group all his FORTRAN or C code into a same set,
    called an interface, and use them in Scilab as Scilab functions. The interfacing
    is made by creating a FORTRAN subroutine which has to be linked to
    Scilab  together
    with the user code. This complex FORTRAN subroutine is automatically generated
    by intersci\ from a description file of the interface.
Refer to intersci documentation for more details.