ocb_scaling.py 文件源码

def archav(hav):
    """ Formula for the inverse haversine

    Parameters
    -----------
    hav : (float)
        Haversine of an angle

    Returns
    ---------
    alpha : (float)
        Angle in radians
    """
    alpha = 2.0 * np.arcsin(np.sqrt(hav))

    return alpha