fann_get_train_error_function Returns the error function used during training &reftitle.description; intfann_get_train_error_function resourceann Returns the error function used during training. The error functions are described further in error functions constants. The default error function is FANN_ERRORFUNC_TANH. &reftitle.parameters; ann &fann.ann.description; &reftitle.returnvalues; The error function constant, or &false; on error. &reftitle.seealso; fann_set_train_error_function