-#endif // ndef NO_GINAC_NAMESPACE
-
-// binary arithmetic operators ex with ex
-
-ex operator+(ex const & lh, ex const & rh)
-{
- debugmsg("operator+(ex,ex)",LOGLEVEL_OPERATOR);
- return lh.exadd(rh);
-}
-
-ex operator-(ex const & lh, ex const & rh)
-{
- debugmsg("operator-(ex,ex)",LOGLEVEL_OPERATOR);
- return lh.exadd(rh.exmul(_ex_1()));
-}