109 lines
2.3 KiB
C++
109 lines
2.3 KiB
C++
/*
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* Copyright (C) 2005 Maarten Keijzer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "FunDef.h"
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#include "SymOps.h"
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#include "Sym.h"
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using namespace std;
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void collect(token_t t, Sym a, SymVec& args) {
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if (a.token() == t) {
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const SymVec& a_args = a.args();
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for (unsigned i = 0; i < a_args.size(); ++i) {
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collect(t, a_args[i], args);
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}
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return;
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}
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args.push_back(a);
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}
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Sym operator+(Sym a, Sym b) {
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SymVec args;
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collect(sum_token, a, args);
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collect(sum_token, b, args);
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return Sym(sum_token, args);
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}
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Sym operator*(Sym a, Sym b) {
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SymVec args;
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collect(prod_token, a, args);
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collect(prod_token, b, args);
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return Sym(prod_token, args);
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}
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Sym operator/(Sym a, Sym b) {
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SymVec args;
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collect(prod_token, a, args);
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SymVec args2;
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collect(prod_token, b, args2);
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SymVec inv;
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inv.push_back(Sym(prod_token, args2));
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args.push_back( Sym(inv_token, inv) );
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return Sym(prod_token, args);
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}
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Sym operator-(Sym a, Sym b) {
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SymVec args;
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collect(sum_token, a, args);
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SymVec args2;
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collect(sum_token, b, args2);
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SymVec min;
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min.push_back(Sym(sum_token, args2));
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args.push_back( Sym(min_token, min) );
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return Sym(sum_token, args);
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}
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Sym operator-(Sym a) {
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return Sym(min_token, a);
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}
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Sym pow(Sym a, Sym b) {
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SymVec args;
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args.push_back(a);
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args.push_back(b);
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return Sym(pow_token, args);
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}
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Sym ifltz(Sym a, Sym b, Sym c) {
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SymVec args;
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args.push_back(a);
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args.push_back(b);
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args.push_back(c);
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return Sym(ifltz_token, args);
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}
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