- added an optional algorithm-switch to lsolve().

[ginac.git] / ginac / indexed.h

diff --git a/ginac/indexed.h b/ginac/indexed.h
index df05429e3eaa87a539c045c8e430c31939f6807d..b5a0dcedff199d0773644bc07e53e7ad9a3f1a6d 100644 (file)
--- a/ginac/indexed.h
+++ b/ginac/indexed.h
@@ -151,6 +151,7 @@ public:
        exvector get_free_indices(void) const;
 
 protected:
+       ex derivative(const symbol & s) const;
        ex thisexprseq(const exvector & v) const;
        ex thisexprseq(exvector * vp) const;
        unsigned return_type(void) const { return return_types::commutative; }
@@ -234,7 +235,7 @@ private:
 
 // utility functions
 
-/** Return the indexed object handled by an ex.
+/** Return the indexed object handled by an ex.  Deprecated: use ex_to<indexed>().
  *  This is unsafe: you need to check the type first. */
 inline const indexed &ex_to_indexed(const ex &e)
 {