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