* Fix bug in ctor from string, reported by Christopher Kennedy.

[ginac.git] / ginac / mul.h

diff --git a/ginac/mul.h b/ginac/mul.h
index d5a73ccf27ea1f188ff6e347a37fe07a768ba9f7..830c213aef1b517fa051c07bb37e61b15a2c72e9 100644 (file)
--- a/ginac/mul.h
+++ b/ginac/mul.h
@@ -45,7 +45,7 @@ public:
        mul(epvector * vp, const ex & oc);
        mul(const ex & lh, const ex & mh, const ex & rh);
        
-       // functions overriding virtual functions from bases classes
+       // functions overriding virtual functions from base classes
 public:
        void print(const print_context & c, unsigned level = 0) const;
        unsigned precedence(void) const {return 50;}
@@ -55,6 +55,7 @@ public:
        ex coeff(const ex & s, int n = 1) const;
        ex eval(int level=0) const;
        ex evalf(int level=0) const;
+       ex evalm(void) const;
        ex series(const relational & s, int order, unsigned options = 0) const;
        ex normal(lst &sym_lst, lst &repl_lst, int level = 0) const;
        numeric integer_content(void) const;
@@ -89,9 +90,11 @@ protected:
 };
 
 // utility functions
-inline const mul &ex_to_mul(const ex &e)
+
+/** Specialization of is_exactly_a<mul>(obj) for mul objects. */
+template<> inline bool is_exactly_a<mul>(const basic & obj)
 {
-       return static_cast<const mul &>(*e.bp);
+       return obj.tinfo()==TINFO_mul;
 }
 
 } // namespace GiNaC