docs: public SimpleMatrix nullSpace() {
          // TODO take advantage of the singular values being ordered already
          if( is64 ) {
              return SimpleMatrix.wrap(SingularOps_DDRM.nullSpace((SingularValueDecomposition_F64)svd, null, tol));
          } else {
              return SimpleMatrix.wrap(SingularOps_FDRM.nullSpace((SingularValueDecomposition_F32)svd, null, (float)tol));
          }
      }