根据器件结构的不同选择不同的风格。
…Using a pipelined binary or ternary adder tree appropriately can greatly improve the quality of your results.
简单地说,要根据LE进位链的数目决定用多少个加数。
例如,对于 4-input LUT,
举例如下:
对于 6-input LUT,… ALMs can simultaneously add three bits.