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专业集成电路（ＡｐｐｌｉｃａｔｉｏｎＳｐｅｃｉｆｉｃＩｎｔｅｒｇｒａｔｅｄＣｉｒｃｕｉｔ，ＡＳＩＣ）设计中的三次多项式计算，存在着一类典型的应用问题，即自变量是累积形成的，待自变量完整形成后再行直接计算是低效的。提出一种改进的三次多项式算法，在保证和直接算法相同精度的条件下，以较少的电路元件实现计算功能。同时，本算法从自变量完整形成到给出最终结果的延迟很小。
Third-order polynomial calculation in ASIC (Application Integrated Specialized Circuit) design has a typical application problem. That is, independent variables are cumulatively formed, and it is inefficient to calculate directly after the independent variables are formed completely. An improved cubic polynomial algorithm is proposed. With the same accuracy as the direct algorithm, the computational functions are realized with fewer circuit components. At the same time, the delay from the complete formation of the algorithm to the final result is very small.