Possbility for positive symbols/numbers.

[ginac.git] / ginac / symbol.h

diff --git a/ginac/symbol.h b/ginac/symbol.h
index 9c7e526d6dca881b89c35a49e39fff2feb89c27b..90013144ccd5d7f88e28a280055b54c814c193df 100644 (file)
--- a/ginac/symbol.h
+++ b/ginac/symbol.h
@@ -132,7 +132,10 @@ public:
 /** Specialization of is_exactly_a<realsymbol>(obj) for realsymbol objects. */
 template<> inline bool is_exactly_a<realsymbol>(const basic & obj)
 {
-       return (obj.tinfo() == &symbol::tinfo_static) && (static_cast<const symbol &>(obj).get_domain() == domain::real);
+       if (obj.tinfo() != &symbol::tinfo_static)
+               return false;
+       unsigned domain = static_cast<const symbol &>(obj).get_domain();
+       return domain==domain::real || domain==domain::positive;
 }
 
 // wrapper functions around member functions