loating point values:

        >>> round(56294995342131.5, 3)
        56294995342131.5
        >>> np.round(16.055, 2), round(16.055, 2)  # equals 16.0549999999999997
        (16.06, 16.05)


    References
    ----------
    .. [1] "Lecture Notes on the Status of IEEE 754", William Kahan,
           https://people.eecs.berkeley.edu/~wkahan/ieee754status/IEEE754.PDF

    Examples
    --------
    >>> np.round([0.37, 1.64])
    array([0., 2.])
    >>> np.round([0.37, 1.64], decimals=1)
    array([0.4, 1.6])
    >>> np.round([.5, 1.5, 2.5, 3.5, 4.5]) # rounds to nearest even value
    array([0., 2., 2., 4., 4.])
    >>> np.round([1,2,3,11], decimals=1) # ndarray of ints is returned
    array([ 1,  2,  3, 11])
    >>> np.round([1,2,3,11], decimals=-1)
    array([ 0,  0,  0, 10])

    r-