* Supplement some (now deprecated) macros by inlined template functions:

[ginac.git] / ginac / add.h

diff --git a/ginac/add.h b/ginac/add.h
index eae04860af7cf0e409de264c86d9b41a25524a8f..e04474f23d1cff19e93daf530ac5a95c47fdb150 100644 (file)
--- a/ginac/add.h
+++ b/ginac/add.h
@@ -78,11 +78,20 @@ protected:
 };
 
 // utility functions
+
+/** Return the add object handled by an ex.
+ *  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__