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[ginac.git] / ginac / constant.h

diff --git a/ginac/constant.h b/ginac/constant.h
index 4c928765fd044c705c3e626520856aee8beb8318..7e8916daed97773fe387a8f359158d5747671e42 100644 (file)
--- a/ginac/constant.h
+++ b/ginac/constant.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's constant types and some special constants. */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 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
@@ -17,19 +17,21 @@
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#ifndef __GINAC_CONSTANT_H__
-#define __GINAC_CONSTANT_H__
+#ifndef GINAC_CONSTANT_H
+#define GINAC_CONSTANT_H
 
-#include <string>
 #include "basic.h"
 #include "ex.h"
+#include "archive.h"
+
+#include <string>
 
 namespace GiNaC {
 
-typedef ex (*evalffunctype)(void);
+typedef ex (*evalffunctype)();
        
 /** This class holds constants, symbols with specific numerical value. Each
  *  object of this class must either provide their own function to evaluate it
@@ -38,62 +40,49 @@ typedef ex (*evalffunctype)(void);
 class constant : public basic
 {
        GINAC_DECLARE_REGISTERED_CLASS(constant, basic)
-       
-// member functions
-       
-       // other ctors
+       // other constructors
 public:
-       constant(const std::string & initname, evalffunctype efun = 0, const std::string & texname = std::string());
-       constant(const std::string & initname, const numeric & initnumber, const std::string & texname = std::string());
+       constant(const std::string & initname, evalffunctype efun = nullptr, const std::string & texname = std::string(), unsigned domain = domain::complex);
+       constant(const std::string & initname, const numeric & initnumber, const std::string & texname = std::string(), unsigned domain = domain::complex);
        
-       // functions overriding virtual functions from bases classes
+       // functions overriding virtual functions from base classes
 public:
-       void print(const print_context & c, unsigned level = 0) const;
-       int degree(const ex & s) const;
-       int ldegree(const ex & s) const;
-       ex coeff(const ex & s, int n = 1) const;
-       ex evalf(int level = 0) const;
+       bool info(unsigned inf) const override;
+       ex evalf() const override;
+       bool is_polynomial(const ex & var) const override;
+       ex conjugate() const override;
+       ex real_part() const override;
+       ex imag_part() const override;
+       void archive(archive_node& n) const override;
+       void read_archive(const archive_node& n, lst& syms) override;
 protected:
-       ex derivative(const symbol & s) const;
-       bool is_equal_same_type(const basic & other) const;
-       unsigned calchash(void) const;
-       
-       // new virtual functions which can be overridden by derived classes
-       // none
+       ex derivative(const symbol & s) const override;
+       bool is_equal_same_type(const basic & other) const override;
+       unsigned calchash() const override;
        
        // non-virtual functions in this class
-       // none
-       
+protected:
+       void do_print(const print_context & c, unsigned level) const;
+       void do_print_tree(const print_tree & c, unsigned level) const;
+       void do_print_latex(const print_latex & c, unsigned level) const;
+       void do_print_python_repr(const print_python_repr & c, unsigned level) const;
+
 // member variables
-       
 private:
        std::string name;     ///< printname of this constant
        std::string TeX_name; ///< LaTeX name
        evalffunctype ef;
-       numeric *number;      ///< numerical value this constant evalf()s to
+       ex number;            ///< numerical value this constant evalf()s to
        unsigned serial;      ///< unique serial number for comparison
        static unsigned next_serial;
+       unsigned domain;      ///< numerical value this constant evalf()s to
 };
+GINAC_DECLARE_UNARCHIVER(constant); 
 
 extern const constant Pi;
 extern const constant Catalan;
 extern const constant Euler;
 
-// utility functions
-
-/** Return the constant object handled by an ex.
- *  This is unsafe: you need to check the type first. */
-inline const constant &ex_to_constant(const ex &e)
-{
-       return static_cast<const constant &>(*e.bp);
-}
-
-/** Specialization of is_exactly_a<constant>(obj) for constant objects. */
-template<> inline bool is_exactly_a<constant>(const basic & obj)
-{
-       return obj.tinfo()==TINFO_constant;
-}
-
 } // namespace GiNaC
 
-#endif // ndef __GINAC_CONSTANT_H__
+#endif // ndef GINAC_CONSTANT_H