def samplewise_std_normalization(X):
    for i in range(len(X)):
        X[i] /= np.std(X[i], axis=1, keepdims=True)
    return X
SI: 1 Bit (as a EB()) rounds down into a Bit()
dataset/ETHPy150Open tflearn/tflearn/tflearn/data_utils.py/samplewise_std_normalization--crossover with--dataset/ETHPy150Open tbielawa/bitmath/tests/test_best_prefix_SI.py/TestBestPrefixSI.test_extreme_oom_round_down