Fix a few bugs and add a new example system.

1 files changed, 17 insertions, 0 deletions

diff --git a/impl/Operator.hpp b/impl/Operator.hpp
index 3072abe..49507c4 100644
--- a/impl/Operator.hpp
+++ b/impl/Operator.hpp
@@ -92,6 +92,23 @@ struct Subtraction : public Operator<Domain> {
 };
 
 template<typename Domain>
+struct Multiplication : public Operator<Domain> {
+  virtual Domain eval(const std::vector<Domain>& arguments) const {
+    Domain result = 1;
+    for (auto it = arguments.begin(),
+           end = arguments.end();
+         it != end;
+         ++it) {
+      result *= *it;
+    }
+    return result;
+  }
+  void print(std::ostream& cout) const {
+    cout << "mult";
+  }
+};
+
+template<typename Domain>
 struct Comma : public Operator<Domain> {
   virtual Domain eval(const std::vector<Domain>& arguments) const {
     if (arguments[0] == -infinity<Domain>()) {