ZeroPointDomain

class torchao.quantization.ZeroPointDomain(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

枚举，指示 zero_point 是在整数域还是浮点域中

整数域：quantized_val = (float_val / scale) (整数) + zero_point (整数) 浮点域：quantized_val = (float_val - (zero_point (浮点) - scale * mid_point)) / scale 无域：quantized_val = (float_val / scale)