- The default implementations of evalf(), diff(), normal() and expand() use

[ginac.git] / ginac / relational.h

diff --git a/ginac/relational.h b/ginac/relational.h
index 8f4efed9ad555d9fc402a7c125cd12e685695b24..0447e94aa37ec44828371a2260b2846622d975e7 100644 (file)
--- a/ginac/relational.h
+++ b/ginac/relational.h
@@ -56,10 +56,7 @@ public:
        bool info(unsigned inf) const;
        unsigned nops() const;
        ex & let_op(int i);
-       ex map(map_func f) const;
        ex eval(int level=0) const;
-       ex evalf(int level=0) const;
-       ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
        ex simplify_ncmul(const exvector & v) const;
 protected:
        unsigned return_type(void) const;
@@ -83,11 +80,20 @@ protected:
 };
 
 // utility functions
+
+/** Return the relational object handled by an ex.  Deprecated: use ex_to<relational>().
+ *  This is unsafe: you need to check the type first. */
 inline const relational &ex_to_relational(const ex &e)
 {
        return static_cast<const relational &>(*e.bp);
 }
 
+/** Specialization of is_exactly_a<relational>(obj) for relational objects. */
+template<> inline bool is_exactly_a<relational>(const basic & obj)
+{
+       return obj.tinfo()==TINFO_relational;
+}
+
 } // namespace GiNaC
 
 #endif // ndef __GINAC_RELATIONAL_H__