/* * call-seq: * dtable.mul!(number) -> dtable * dtable.mul!(other) -> dtable * * When argument is a number, each entry x in _dtable_ is replaced by x * _number_. * When argument is a data array, each entry x in _dtable_ is replaced by x * * the corresponding entry in the _other_ data array. */ VALUE dtable_mul_bang(VALUE ary, VALUE arg) {