intview.c and intmatmul.c are two sample C gateway functions.
How to adapt the code for your functions
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0 - Write your interface program (see intmatmul.c and intview.c)
1 - Edit the Makefile (or Makefile.mak for Windows) to add the name
    of the new .c gateway file. (CINTERFACES = ...)  and the name
    of the associated Scilab function (CFUNCTIONS = ...).
    Check that SCIDIR = pathname of Scilab directory
2 - Type "make"  (Files tutorial.sce and tutorial_gateway.c are made).
3 - At the Scilab prompt --> enter "exec tutorial.sce"
4 - Use the new function e.g. -->AB=matmul(ones(2,2),ones(2,2))

