/** @file operators.h
*
- * Interface to GiNaC's overloaded operators.
- *
+ * Interface to GiNaC's overloaded operators. */
+
+/*
* GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
#include <iostream>
+namespace GiNaC {
+
+class ex;
+class numeric;
+class relational;
+
// binary arithmetic operators ex with ex
ex operator+(ex const & lh, ex const & rh);
ex operator-(ex const & lh, ex const & rh);
ostream & operator<<(ostream & os, ex const & e);
istream & operator>>(istream & is, ex & e);
+} // namespace GiNaC
+
#endif // ndef __GINAC_OPERATORS_H__