Markus Holzer
--- a/pystencils_tests/test_conditional_vec.py
+++ b/pystencils_tests/test_conditional_vec.py


 @pytest.mark.parametrize('instruction_set', supported_instruction_sets)
-@pytest.mark.parametrize('dtype', ('float', 'double'))
--- a/pystencils_tests/test_vectorization.py
+++ b/pystencils_tests/test_vectorization.py

    ast = ps.create_kernel(as6)
    vectorize(ast, instruction_set=instruction_set)
+    ps.show_code(ast)
--- a/pystencils/backends/cbackend.py
+++ b/pystencils/backends/cbackend.py
            exp = expr.exp

        if exp.is_integer and exp.is_number and 0 < exp < 8:
-            return "(" + self._print(sp.Mul(*[expr.base] * exp, evaluate=False)) + ")"
+            return self._print(sp.Mul(*[expr.base] * exp, evaluate=False))
        elif exp == -1: