fann_set_activation_function	fann_set_activation_function_layer

Fann Functions	Last updated: Mon, 26 Oct 2026

fann_set_activation_function_hidden

(PECL fann >= 1.0.0)

fann_set_activation_function_hidden — Sets the activation function for all of the hidden layers

function fann_set_activation_function_hidden(resource $ann, int $activation_function): bool

Sets the activation function for all of the hidden layers.

Returns true on success, or false otherwise.

fann_set_activation_function() - Sets the activation function for supplied neuron and layer
fann_set_activation_function_layer() - Sets the activation function for all the neurons in the supplied layer
fann_set_activation_function_output() - Sets the activation function for the output layer
fann_set_activation_steepness() - Sets the activation steepness for supplied neuron and layer number

fann_set_activation_function	fann_set_activation_function_layer

Fann Functions	Last updated: Mon, 26 Oct 2026