Added mathsym+tcc and boost against all advice

eo/contrib/mathsym/fun/SymOps.cpp

@@ -0,0 +1,109 @@
+/*	    
+ *             Copyright (C) 2005 Maarten Keijzer
+ *
+ *          This program is free software; you can redistribute it and/or modify
+ *          it under the terms of version 2 of the GNU General Public License as 
+ *          published by the Free Software Foundation. 
+ *
+ *          This program is distributed in the hope that it will be useful,
+ *          but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *          GNU General Public License for more details.
+ *
+ *          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
+ */
+
+#include "FunDef.h"
+#include "SymOps.h"
+#include "Sym.h"
+
+using namespace std;
+
+void collect(token_t t, Sym a, SymVec& args) {
+    
+    if (a.token() == t) {
+	const SymVec& a_args = a.args();
+	for (unsigned i = 0; i < a_args.size(); ++i) {
+	    collect(t, a_args[i], args);
+	}
+	return;
+    }
+     
+    args.push_back(a);
+}
+
+Sym operator+(Sym a, Sym b) {
+    
+    SymVec args;
+
+    collect(sum_token, a, args);
+    collect(sum_token, b, args);
+    
+    return Sym(sum_token, args);
+}
+
+Sym operator*(Sym a, Sym b) {
+    
+    SymVec args;
+
+    collect(prod_token, a, args);
+    collect(prod_token, b, args);
+    
+    return Sym(prod_token, args);
+}
+
+Sym operator/(Sym a, Sym b) {
+    
+    SymVec args;
+
+    collect(prod_token, a, args);
+    
+    SymVec args2;
+    collect(prod_token, b, args2);
+    
+    SymVec inv;
+    inv.push_back(Sym(prod_token, args2));
+    
+    args.push_back( Sym(inv_token, inv) );
+
+    return Sym(prod_token, args);
+}
+
+Sym operator-(Sym a, Sym b) {
+    
+    SymVec args;
+
+    collect(sum_token, a, args);
+    
+    SymVec args2;
+    collect(sum_token, b, args2);
+    
+    SymVec min;
+    min.push_back(Sym(sum_token, args2));
+    
+    args.push_back( Sym(min_token, min) );
+
+    return Sym(sum_token, args);
+}
+
+Sym operator-(Sym a) {
+    return Sym(min_token, a);
+}
+
+Sym pow(Sym a, Sym b) {
+    SymVec args;
+    args.push_back(a);
+    args.push_back(b);
+    return Sym(pow_token, args);
+}
+
+Sym ifltz(Sym a, Sym b, Sym c) {
+    SymVec args;
+    args.push_back(a);
+    args.push_back(b);
+    args.push_back(c);
+    return Sym(ifltz_token, args);
+}
+