]> Hi, I studied the manuals but didn't grasp it: how can I use the following subprogram (the get_mie() function) from OCaml: == #include <stdio.h> #include <stddef.h> #include <stdlib.h> #include <math.h> #include "/home/gonzi/Wissenschaft/mie/complex.h" #include "/home/gonzi/Wissenschaft/mie/nrutil.h" #include "/home/gonzi/Wissenschaft/mie/bhmie.h" #define mxnang 1000 #define nmxx 3000 #define CXONE Complex(1.0, 0.0) void get_mie(float re_part, float im_part,float x, unsigned long nang,float* erg_s1_re,float* erg_s1_im,float* erg_s2_re,float* erg_s2_im, float* erg) { fcomplex cxref; fcomplex cxs1[mxnang], cxs2[mxnang]; float pqext,pqsca,pqback,pgsca; unsigned long i; cxref=Complex(re_part,im_part); /* function call */ bhmie(x, cxref, nang, cxs1, cxs2, &pqext, &pqsca, &pqback, &pgsca); /* return values; the passed array pointers become updated*/ for (i=1; i<=(2*nang-1); i++) { erg_s1_re[i] = cxs1[i].r; erg_s1_im[i] = cxs1[i].i; erg_s2_re[i] = cxs2[i].r; erg_s2_im[i] = cxs2[i].i; } erg[0] = pqext; erg[1] = pqsca; erg[2] = pqback; erg[3] = pgsca; } == In Python I did it with SWIG (I took me as an absolute beginner in foreign function calls only an afternoon). S. Gonzi ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners