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