用Prolog写的一些基本函数，如compress, decompress, pack, gcd, duplicate, sort-Some fundamental functions written in Prolog, such as compress, decompress, pack, gcd, duplicate, sort.

实现大数操作的算法模板，重载了基本操作（+，-，* ，/），取模，次方，gcd等-Operation of the algorithm to achieve large numbers templates, overloads the basic operation (+,-,*, /), modulus, power, gcd, etc.

求两个数的最大公约数，此程序用C语言编写，经测试没有问题。-For two of the largest number of companies, the program written in C, tested no problem.