def __init__(self, name, host='127.0.0.1', port=27017):
        self.name = name
        self.host = host
        self.port = port
def test_ccode_sqrt():
    assert ccode(sqrt(x)) == "sqrt(x)"
    assert ccode(x**0.5) == "sqrt(x)"
    assert ccode(sqrt(x)) == "sqrt(x)"