calculate big F for linearlized form
    not fully tested

    :param p:
    :param f:
    :return:

def bm3_big_F(p, v, v0):
    """
    calculate big F for linearlized form
    not fully tested

    :param p:
    :param f:
    :return:
    """
    f = bm3_small_f(v, v0)
    return cal_big_F(p, f)