See Also
    --------
    ndtr : Standard normal cumulative probability distribution
    ndtri_exp : Inverse of log_ndtr

    Examples
    --------
    `ndtri` is the percentile function of the standard normal distribution.
    This means it returns the inverse of the cumulative density `ndtr`. First,
    let us compute a cumulative density value.

    >>> import numpy as np
    >>> from scipy.special import ndtri, ndtr
    >>> cdf_val = ndtr(2)
    >>> cdf_val
    0.9772498680518208

    Verify that `ndtri` yields the original value for `x` up to floating point
    errors.

    >>> ndtri(cdf_val)
    2.0000000000000004

    Plot the function. For that purpose, we provide a NumPy array as argument.

    >>> import matplotlib.pyplot as plt
    >>> x = np.linspace(0.01, 1, 200)
    >>> fig, ax = plt.subplots()
    >>> ax.plot(x, ndtri(x))
    >>> ax.set_title("Standard normal percentile function")
    >>> plt.show()
    Ú