C语言中常用的数学函数

① double exp(double x); (求e的x次幂)
② double pow(double x, double y); (求x的y次幂)
③ double sqrt(double x); (求x的算术平方根)
④ double fabs(double x); (求参数x的绝对值)
⑤ double log(double x); (以自然对数e为底)
⑥ double log10(double x); (以10为底)
⑦ double sin(double x); (x为弧度)
⑧ double cos(double x); (x为弧度)