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- //
- // class DoubleThing -- a double thing derived from
- // class Thing.
- //
- // Version 1.01 -- 2/25/91
- //
- // Michael Kelly -- Author
- //
- #if !defined(TH_DOUBL_HPP)
- #define TH_DOUBL_HPP
-
- #include "thing.hpp"
-
- class DoubleThing : public Thing {
-
- public:
-
- DoubleThing()
- {
- thing = new double(0.0);
- }
- DoubleThing( double &some_thing )
- {
- thing = new double(some_thing);
- }
-
- long type()
- {
- return ( (long)DoubleType << 16) | sizeof(double);
- }
-
- operator double() { return *( (double *)ptr() ); }
-
- void print();
- int printable() { return 1; }
- int sortable() { return 1; }
-
-
- operator ==(Thing &some_thing);
- operator !=(Thing &some_thing);
- operator < (Thing &some_thing);
- operator <=(Thing &some_thing);
- operator > (Thing &some_thing);
- operator >=(Thing &some_thing);
- };
-
- #endif
-