polytools.py 文件源码

def polyroots01(p):
    """Returns the real roots between 0 and 1 of the polynomial with
    coefficients given in p,
      p[0] * x**n + p[1] * x**(n-1) + ... + p[n-1]*x + p[n]
    p can also be a np.poly1d object.  See polyroots for more information."""
    return polyroots(p, realroots=True, condition=lambda tval: 0 <= tval <= 1)