、十进制数的加、减、乘、除、乘方、取模等简单计算。

2、科学计算函数，包括(反)正弦、(反)余弦、(反)正切、(反)余切、开方、指数等函数运算。

3、以角度、弧度两种方式实现上述部分函数

-Decimal plus, minus, multiply, power, modulo a simple calculation. 2, scientific computing functions, including the (anti-) sine (anti-) cosine, (anti-) tangent, (anti) cotangent, square root, exponential function computing. 3, the angle of curvature of two ways to achieve some of these functions