def mark_positive(builder, load):
    upper_bound = (1 << (load.type.width - 1)) - 1
    set_range_metadata(builder, load, 0, upper_bound)
historic market value of the spread
dataset/ETHPy150Open numba/numba/numba/targets/arrayobj.py/mark_positive--crossover with--dataset/ETHPy150Open cmorgan/trading-with-python/lib/classes.py/Spread.value