Fixed a bug in atan2. It gave a division by zero error for calls like
[ginac.git] / ginac / inifcns_trans.cpp
index 39931dc..3f161d2 100644 (file)
@@ -842,7 +842,7 @@ static ex atan2_eval(const ex & y, const ex & x)
                        return _ex1_2*Pi;
 
                // atan(y, 0), y real and negative -> -Pi/2
-               if (y.info(info_flags::negative))
+               if (y.info(info_flags::real) && !y.is_zero())
                        return _ex_1_2*Pi;
        }