linalg:tanh

(linalg:tanh array)

Returns a fresh array of the same shape with the hyperbolic tangent applied to every element (numpy's np.tanh) -- equivalent to (linalg:emap #'tanh array), but as a named function it is accelerated under --simd, which makes it the go-to activation function for neural-network code over packed arrays. Like tanh itself, it is fdlibm's on every backend, so the digits agree everywhere.