你好，请教一下c语言中math头文件中的函数有哪些？

Question

c语言中math头文件中的函数有哪些

Answer 1

数学函数库,一些数学计算的公式的具体实现是放在math.h里,具体有：
1 三角函数
double sin (double);
double cos (double);
double tan (double);
2 反三角函数
double asin (double); 结果介于[-PI/2, PI/2]
double acos (double); 结果介于[0, PI]
double atan (double); 反正切(主值), 结果介于[-PI/2, PI/2]
double atan2 (double, double); 反正切(整圆值), 结果介于[-PI/2, PI/2]
3 双曲三角函数
double sinh (double);
double cosh (double);
double tanh (double);
4 指数与对数
double exp (double);
double sqrt (double);
double log (double); 以e为底的对数
double log10 (double);
double pow(double x, double y)//计算以x为底数的y次幂
5 取整
double ceil (double); 取上整
double floor (double); 取下整
6 绝对值
double fabs (double);
double cabs(struct complex znum) //求复数的绝对值
7 标准化浮点数
double frexp (double f, int *p); 标准化浮点数, f = x * 2^p, 已知f求x, p ( x介于[0.5, 1] )
double ldexp (double x, int p); 与frexp相反, 已知x, p求f
8 取整与取余
double modf (double, double*); 将参数的整数部分通过指针回传, 返回小数部分
double fmod (double, double); 返回两参数相除的余数
9其他
double hypot(double x, double y);//已知直角三角形两个直角边长度，求斜边长度
double ldexp(double x, int exponent);//计算x*(2的exponent次幂)
double poly(double x, int degree, double coeffs [] )//计算多项式
nt matherr(struct exception *e)//数学错误计算处理程序
source: 《C & C++ Code Capsules》

Answer 2

你自己可以打开那个文件看看那
用记事本程序
可以看到
int _Cdecl abs (int x);
double _Cdecl acos (double x);
double _Cdecl asin (double x);
double _Cdecl atan (double x);
double _Cdecl atan2 (double y, double x);
double _Cdecl atof (const char *s);
double _Cdecl ceil (double x);
double _Cdecl cos (double x);
double _Cdecl cosh (double x);
double _Cdecl exp (double x);
double _Cdecl fabs (double x);
double _Cdecl floor (double x);
double _Cdecl fmod (double x, double y);
double _Cdecl frexp (double x, int *exponent);
long _Cdecl labs (long x);
double _Cdecl ldexp (double x, int exponent);
double _Cdecl log (double x);
double _Cdecl log10 (double x);
double _Cdecl modf (double x, double *ipart);
double _Cdecl pow (double x, double y);
double _Cdecl sin (double x);
double _Cdecl sinh (double x);
double _Cdecl sqrt (double x);
double _Cdecl tan (double x);
double _Cdecl tanh (double x);
这些，后面就是常用的函数名