對數(shù)函數(shù)ln(x)

double log10(double x);

對數(shù)函數(shù)log

double pow(double x, double y);

指數(shù)函數(shù)(x的y次方)

double sqrt(double x);

計(jì)算平方根函數(shù)

double ceil(double x);

向上舍入函數(shù)

double floor(double x);

向下舍入函數(shù)

double fabs(double x);

求浮點(diǎn)數(shù)的絕對值

double ldexp(double x, int n);

裝載浮點(diǎn)數(shù)函數(shù)

double frexp(double x, int* exp);

分解浮點(diǎn)數(shù)函數(shù)

double modf(double x, double* ip);

分解雙精度數(shù)函數(shù)

double fmod(double x, double y);

求模函數(shù)

double sin(double x);

計(jì)算x的正弦值函數(shù)

double cos(double x);

計(jì)算x的余弦值函數(shù)

double tan(double x);

計(jì)算x的正切值函數(shù)

double asin(double x);

計(jì)算x的反正弦函數(shù)

double acos(double x);

計(jì)算x的反余弦函數(shù)

double atan(double x);

反正切函數(shù)1

double atan2(double y, double x);

反正切函數(shù)2

double sinh(double x);

計(jì)算x的雙曲正弦值

double cosh(double x);

計(jì)算x的雙曲余弦值

double tanh(double x);