#include <string>
#include <ginac/basic.h>
+namespace GiNaC {
+
/** This class holds constants, symbols with specific numerical value. Each
* object of this class must either provide their own function to evaluate it
* to class numeric or provide the constant as a numeric (if it's an exact
extern const constant Catalan;
extern const constant EulerGamma;
+} // namespace GiNaC
+
#endif // ndef __GINAC_CONSTANT_H__