- diff() is now only defined on classes ex and basic, where it handles

[ginac.git] / ginac / mul.h

diff --git a/ginac/mul.h b/ginac/mul.h
index de047f4559c8cc5ceffe7a8e4d5215de17336d4f..1a01741719bacaac7e2b3aac267d3ca19c07805e 100644 (file)
--- a/ginac/mul.h
+++ b/ginac/mul.h
@@ -71,7 +71,6 @@ public:
     int ldegree(const symbol & s) const;
     ex coeff(const symbol & s, int n=1) const;
     ex eval(int level=0) const;
-    ex diff(const symbol & s) const;
     ex series(const symbol & s, const ex & point, int order) const;
     ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
     numeric integer_content(void) const;
@@ -80,6 +79,7 @@ public:
     exvector get_indices(void) const;
     ex simplify_ncmul(const exvector & v) const;
 protected:
+    ex derivative(const symbol & s) const;
     int compare_same_type(const basic & other) const;
     bool is_equal_same_type(const basic & other) const;
     unsigned return_type(void) const;