performs a rank one update on matrix a using vectors u and w . the results are stored in a . a = a + & gamma ; u wt this is called a rank1 update because the matrix u wt has a rank of 1 . concode_field_sep PlaceHolder placeHolder concode_field_sep void mult concode_elem_sep void householder concode_elem_sep double innerProdA concode_elem_sep double innerProdTranA concode_elem_sep void addOuterProd concode_elem_sep double innerProd concode_elem_sep void outerProd