/* * call-seq: * dtable.atan2!(number) -> dtable * dtable.atan2!(other) -> dtable * * When argument is a number, this operation replaces each entry x of _dtable_ by the angle whose tangent is x/_number_. * When argument is a data array, this operation replaces each entry x of _dtable_ by the angle whose tangent is x divided * by the corresponding entry in the _other_ data array. */ VALUE dtable_atan2_bang(VALUE ary, VALUE arg) {