brainpy.math.surrogate.SquarewaveFourierSeries# class brainpy.math.surrogate.SquarewaveFourierSeries(n=2, t_period=8.0)[source]# Judge spiking state with a squarewave fourier series. See also squarewave_fourier_series __init__(n=2, t_period=8.0)[source]# Methods __init__([n, t_period]) surrogate_fun(x) The surrogate function. surrogate_grad(x) The gradient function of the surrogate function.