docs: public static double fastNormP(DMatrixRMaj A , double p ) {
          if( p == 1 ) {
              return normP1(A);
          } else if( p == 2 ) {
              return fastNormP2(A);
          } else if( Double.isInfinite(p)) {
              return normPInf(A);
          }
          if( MatrixFeatures_DDRM.isVector(A) ) {
              return fastElementP(A,p);
          } else {
              throw new IllegalArgumentException("Doesn't support induced norms yet.");
          }
      }