X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Fadd.h;h=fe8d20b7c93f165d9d4cfc346c0ebc060e6dadf2;hb=c8382619f13fe586e8281b128404662f691ad4d8;hp=1e036627c68c8d39bbc37c25e944490c827e7e2c;hpb=e78622a06f749a124b007aa7b969de02fcc9c3d2;p=ginac.git

diff --git a/ginac/add.h b/ginac/add.h
index 1e036627..fe8d20b7 100644
--- a/ginac/add.h
+++ b/ginac/add.h
@@ -44,7 +44,7 @@ public:
 	add(const epvector & v, const ex & oc);
 	add(epvector * vp, const ex & oc);
 	
-	// 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 40;}
@@ -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__