* Interface to GiNaC's constant types and some special constants. */
/*
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#define __GINAC_CONSTANT_H__
#include <string>
-#include <ginac/basic.h>
+#include "basic.h"
+#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
+#endif // ndef NO_NAMESPACE_GINAC
+typedef ex (*evalffunctype)(void);
+
/** 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
* number). */
class constant : public basic
{
+ GINAC_DECLARE_REGISTERED_CLASS(constant, basic)
// member functions
// default constructor, destructor, copy constructor assignment operator and helpers
public:
+ constant();
~constant();
- constant(constant const & other);
- // constant const & operator=(constant const & other); /* it's pervert! */
+ constant(const constant & other);
+ // const constant & operator=(const constant & other); /* it's pervert! */
protected:
- void copy(constant const & other);
+ void copy(const constant & other);
void destroy(bool call_parent);
// other constructors
public:
- constant(string const & initname, ex (*efun)()=0);
- constant(string const & initname, numeric const & initnumber);
+ constant(const string & initname, evalffunctype efun=0);
+ constant(const string & initname, const numeric & initnumber);
// functions overriding virtual functions from bases classes
public:
basic * duplicate() const;
- void printraw(ostream & os) const;
void print(ostream & os, unsigned upper_precedence=0) const;
+ void printraw(ostream & os) const;
+ void printtree(ostream & os, unsigned indent) const;
void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
ex evalf(int level=0) const;
- ex diff(symbol const & s) const;
protected:
- int compare_same_type(basic const & other) const;
- bool is_equal_same_type(basic const & other) const;
+ ex derivative(const symbol & s) const;
+ int compare_same_type(const basic & other) const;
+ bool is_equal_same_type(const basic & other) const;
// new virtual functions which can be overridden by derived classes
// none
private:
string name;
- ex (*ef)();
+ evalffunctype ef;
numeric * number;
- bool fct_assigned;
+ // bool fct_assigned;
unsigned serial; //!< unique serial number for comparision
static unsigned next_serial;
};
// global constants
extern const constant some_constant;
-extern type_info const & typeid_constant;
+extern const type_info & typeid_constant;
// extern const numeric I;
extern const constant Pi;
extern const constant Catalan;
extern const constant EulerGamma;
+#ifndef NO_NAMESPACE_GINAC
} // namespace GiNaC
+#endif // ndef NO_NAMESPACE_GINAC
#endif // ndef __GINAC_CONSTANT_H__