is_exactly_a: use typeid() to check the type of expression.

[ginac.git] / ginac / symbol.h

diff --git a/ginac/symbol.h b/ginac/symbol.h
index c174ad5f5136b10e83d8dc0dc1cf526b07b142d6..3caa24e45c500c2943a6d8b6be7a57586483ac3f 100644 (file)
--- a/ginac/symbol.h
+++ b/ginac/symbol.h
@@ -24,6 +24,7 @@
 #define __GINAC_SYMBOL_H__
 
 #include <string>
+#include <typeinfo>
 #include "basic.h"
 #include "ex.h"
 #include "ptr.h"
@@ -129,7 +130,7 @@ public:
 /** Specialization of is_exactly_a<realsymbol>(obj) for realsymbol objects. */
 template<> inline bool is_exactly_a<realsymbol>(const basic & obj)
 {
-       if (obj.tinfo() != &symbol::tinfo_static)
+       if (!is_a<symbol>(obj))
                return false;
        unsigned domain = static_cast<const symbol &>(obj).get_domain();
        return domain==domain::real || domain==domain::positive;
@@ -138,7 +139,7 @@ template<> inline bool is_exactly_a<realsymbol>(const basic & obj)
 /** Specialization of is_exactly_a<possymbol>(obj) for possymbol objects. */
 template<> inline bool is_exactly_a<possymbol>(const basic & obj)
 {
-       if (obj.tinfo() != &symbol::tinfo_static)
+       if (!is_a<symbol>(obj))
                return false;
        unsigned domain = static_cast<const symbol &>(obj).get_domain();
        return domain == domain::positive;