Univariate Hensel lifting now uses upoly.

[ginac.git] / ginac / constant.cpp

diff --git a/ginac/constant.cpp b/ginac/constant.cpp
index dd1c170b6c21ba425da8cbc2a82590ad525c1dd2..10972b076a82d69c1b58824b88a681ed24f9f818 100644 (file)
--- a/ginac/constant.cpp
+++ b/ginac/constant.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's constant types and some special constants. */
 
 /*
- *  GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2008 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
@@ -45,7 +45,7 @@ GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(constant, basic,
 
 // public
 
-constant::constant() : basic(&constant::tinfo_static), ef(0), serial(next_serial++), domain(domain::complex)
+constant::constant() : ef(0), serial(next_serial++), domain(domain::complex)
 {
        setflag(status_flags::evaluated | status_flags::expanded);
 }
@@ -57,7 +57,7 @@ constant::constant() : basic(&constant::tinfo_static), ef(0), serial(next_serial
 // public
 
 constant::constant(const std::string & initname, evalffunctype efun, const std::string & texname, unsigned dm)
-  : basic(&constant::tinfo_static), name(initname), ef(efun), serial(next_serial++), domain(dm)
+  : name(initname), ef(efun), serial(next_serial++), domain(dm)
 {
        if (texname.empty())
                TeX_name = "\\mbox{" + name + "}";
@@ -67,7 +67,7 @@ constant::constant(const std::string & initname, evalffunctype efun, const std::
 }
 
 constant::constant(const std::string & initname, const numeric & initnumber, const std::string & texname, unsigned dm)
-  : basic(&constant::tinfo_static), name(initname), ef(0), number(initnumber), serial(next_serial++), domain(dm)
+  : name(initname), ef(0), number(initnumber), serial(next_serial++), domain(dm)
 {
        if (texname.empty())
                TeX_name = "\\mbox{" + name + "}";
@@ -80,25 +80,24 @@ constant::constant(const std::string & initname, const numeric & initnumber, con
 // archiving
 //////////
 
-constant::constant(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst) {}
-
-ex constant::unarchive(const archive_node &n, lst &sym_lst)
+void constant::read_archive(const archive_node &n, lst &sym_lst)
 {
        // Find constant by name (!! this is bad: 'twould be better if there
        // was a list of all global constants that we could search)
        std::string s;
        if (n.find_string("name", s)) {
                if (s == Pi.name)
-                       return Pi;
+                       *this = Pi;
                else if (s == Catalan.name)
-                       return Catalan;
+                       *this = Catalan;
                else if (s == Euler.name)
-                       return Euler;
+                       *this = Euler;
                else
                        throw (std::runtime_error("unknown constant '" + s + "' in archive"));
        } else
                throw (std::runtime_error("unnamed constant in archive"));
 }
+GINAC_BIND_UNARCHIVER(constant);
 
 void constant::archive(archive_node &n) const
 {
@@ -216,7 +215,8 @@ bool constant::is_equal_same_type(const basic & other) const
 
 unsigned constant::calchash() const
 {
-       hashvalue = golden_ratio_hash((p_int)tinfo() ^ serial);
+       const void* typeid_this = (const void*)typeid(*this).name();
+       hashvalue = golden_ratio_hash((p_int)typeid_this ^ serial);
 
        setflag(status_flags::hash_calculated);