ZeroPointDomain

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

枚举类型，指示零点 (zero_point) 是处于整数域还是浮点域

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