X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;ds=sidebyside;f=ginac%2Fconstant.cpp;h=10972b076a82d69c1b58824b88a681ed24f9f818;hb=375a7aa1f13fa6061c278eb2c2447fd91521b45d;hp=13acc363f54db0f0dd3f3908ae6ab5e1d987a86b;hpb=7d870583a6bf21a2ffb7b6f051b702064623892e;p=ginac.git

diff --git a/ginac/constant.cpp b/ginac/constant.cpp
index 13acc363..10972b07 100644
--- a/ginac/constant.cpp
+++ b/ginac/constant.cpp
@@ -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);