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

[ginac.git] / ginac / power.h

diff --git a/ginac/power.h b/ginac/power.h
index 13dfd5ffbd4da8b413956991a74a1819f8695c9e..7a76217d2aa94f70f314c9436ae6ef6cfc3cfef3 100644 (file)
--- a/ginac/power.h
+++ b/ginac/power.h
@@ -73,12 +73,12 @@ public:
     ex coeff(const symbol & s, int n=1) const;
     ex eval(int level=0) const;
     ex evalf(int level=0) const;
-    ex diff(const symbol & s) const;
     ex series(const symbol & s, const ex & point, int order) const;
     ex subs(const lst & ls, const lst & lr) const;
     ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
     ex simplify_ncmul(const exvector & v) const;
 protected:
+    ex derivative(const symbol & s) const;
     int compare_same_type(const basic & other) const;
     unsigned return_type(void) const;
     unsigned return_type_tinfo(void) const;