some cleanups

[ginac.git] / ginac / add.h

diff --git a/ginac/add.h b/ginac/add.h
index 1e036627c68c8d39bbc37c25e944490c827e7e2c..c0dfca55f8d0c96fb58af906fcda79ea88c8d76a 100644 (file)
--- a/ginac/add.h
+++ b/ginac/add.h
@@ -53,6 +53,7 @@ public:
        int ldegree(const ex & s) const;
        ex coeff(const ex & s, int n=1) const;
        ex eval(int level=0) const;
+       ex evalm(void) const;
        ex series(const relational & r, int order, unsigned options = 0) const;
        ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
        numeric integer_content(void) const;
@@ -77,11 +78,20 @@ protected:
 };
 
 // utility functions
+
+/** Return the add object handled by an ex.  Deprecated: use ex_to<add>().
+ *  This is unsafe: you need to check the type first. */
 inline const add &ex_to_add(const ex &e)
 {
        return static_cast<const add &>(*e.bp);
 }
 
+/** Specialization of is_exactly_a<add>(obj) for add objects. */
+template<> inline bool is_exactly_a<add>(const basic & obj)
+{
+       return obj.tinfo()==TINFO_add;
+}
+
 } // namespace GiNaC
 
 #endif // ndef __GINAC_ADD_H__