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

[ginac.git] / ginac / mul.h

diff --git a/ginac/mul.h b/ginac/mul.h
index d5a73ccf27ea1f188ff6e347a37fe07a768ba9f7..23e0e1f3e60845d914631ec9be0d53a4ae72e82b 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;
@@ -89,11 +90,20 @@ protected:
 };
 
 // utility functions
+
+/** Return the mul object handled by an ex.  Deprecated: use ex_to<mul>().
+ *  This is unsafe: you need to check the type first. */
 inline const mul &ex_to_mul(const ex &e)
 {
        return static_cast<const mul &>(*e.bp);
 }
 
+/** Specialization of is_exactly_a<mul>(obj) for mul objects. */
+template<> inline bool is_exactly_a<mul>(const basic & obj)
+{
+       return obj.tinfo()==TINFO_mul;
+}
+
 } // namespace GiNaC
 
 #endif // ndef __GINAC_MUL_H__