/* * call-seq: * dvector.tanh! -> dvector * * Replace each entry x of _dvector_ with tanh(x). * * a = Dvector[ 1.1, -2.2, 5.3 ] * a.tanh! -> Dvector[ tanh(1.1), tanh(-2.2), tanh(5.3) ] * a -> Dvector[ tanh(1.1), tanh(-2.2), tanh(5.3) ] */ VALUE dvector_tanh_bang(VALUE ary) {