docs: public static double elementMaxAbs( ZMatrixRMaj a ) {
          final int size = a.getDataLength();
  
          double max = 0;
          for( int i = 0; i < size; i += 2 ) {
              double real = a.data[i];
              double imag = a.data[i+1];
  
              double val = real*real + imag*imag;
  
              if( val > max ) {
                  max = val;
              }
          }
  
          return Math.sqrt(max);
      }