Based on sign digit negabinary representation, the two step addition and one step subtraction of arbitrary length operands can be performed.
基于符号数字负二进制表达，提出了任意字长操作数的并行两步加法与一步减法。
Simple arithmetic expressions, including addition, subtraction, etc. , to enter an equal sign marks the end of the STL.
说明：用STL实现简单运算表达式，其中包括加减乘除等，以输入等号为结束标志。
Simple arithmetic expressions, including addition, subtraction, etc. , to enter an equal sign marks the end of the STL.
说明：用STL实现简单运算表达式，其中包括加减乘除等，以输入等号为结束标志。
应用推荐