re-enable ` count_operations`

src/pystencils/sympyextensions/math.py

@@ -549,8 +549,6 @@ def count_operations(term: Union[sp.Expr, List[sp.Expr], List[Assignment]],
     Returns:
         dict with 'adds', 'muls' and 'divs' keys
     """
-    raise NotImplementedError("count_operations is currently out of order.")
-
     from pystencils.sympyextensions.fast_approximation import fast_sqrt, fast_inv_sqrt, fast_division
 
     result = {'adds': 0, 'muls': 0, 'divs': 0, 'sqrts': 0,
@@ -567,9 +565,6 @@ def count_operations(term: Union[sp.Expr, List[sp.Expr], List[Assignment]],
     def check_type(e):
         if only_type is None:
             return True
-        #   FIXME nbackend
-        # if isinstance(e, FieldPointerSymbol) and only_type == "real":
-        #     return only_type == "int"
 
         try:
             # base_type = get_type_of_expression(e)