NN Activation functions in GDscript

# Hyperbolic Tanjant Function
func _tanh(x, derivative=false)->float:
    if derivative:
        return(1 - pow(x, 2))
    return tanh(x)

# ReLU Function
func re(x:float)->float:
    return x * int(x>0)

# Leaky ReLU Function
func lr(x:float)->float:
    if x < 0:
        return (x/10.0)
    else:
        return x

# Sigmoid Function
func sigmoid(x:float)->float:
    return (1/(1+exp(-x)))

func swish(x:float)->float:
    return sigmoid(x)*x