code: public static double[] zmbd(double[] lower, double[] upper, RandomGenerator randomGenerator) {
          return DMatrixUtils.zmbd(lower, upper, 0.0, randomGenerator);
      }
docs: Computes the zero-mean bounded distribution for the provided distances.
  
  @param lower Lower distances.
  @param upper Upper distances.
  @param randomGenerator Random number generator.
  @return The zero-mean bounded uniform distribution.