/* * call-seq: * dvector.sqrt -> a_dvector * * Returns of copy of _dvector_ with each entry x replaced by sqrt(x). * * a = Dvector[ 1.1, 2.2, 5.3 ] * a.sqrt -> Dvector[ sqrt(1.1), sqrt(2.2), sqrt(5.3) ] */ VALUE dvector_sqrt(VALUE ary) {