Introduction - If you have any usage issues, please Google them yourself
Based on STL string of high-precision calculation of support for string-type format for storing the multi-precision integer operations (including 2B !,-,*,/( divisible), (remainder),- (negative check), involution, the square), and some allow the string-type integer and the int-type hybrid operation, to support the sign, the result will be stored using string-based (multi-to single-precision accuracy remainder (using int) except!)