RosettaCodeData/Task/Call-a-foreign-language-fun.../OCaml/call-a-foreign-language-fun...

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#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <mylib.h>
CAMLprim value
caml_myfunc_a(value unit) {
myfunc_a();
return Val_unit;
}
CAMLprim value
caml_myfunc_b(value a, value b) {
float c = myfunc_b(Int_val(a), Double_val(b));
return caml_copy_double(c);
}
CAMLprim value
caml_myfunc_c(value ml_array) {
int i, len;
int *arr;
char *s;
len = Wosize_val(ml_array);
arr = malloc(len * sizeof(int));
for (i=0; i < len; i++) {
arr[i] = Int_val(Field(ml_array, i));
}
s = myfunc_c(arr, len);
free(arr);
return caml_copy_string(s);
}