由于沒(méi)有找到最初的出處芳杏，所以就不標(biāo)明參考地址了嚷节。
- 三角函數(shù)
double sin (double); //正弦
double cos (double); //余弦
double tan (double); //正切
- 反三角函數(shù)
double asin (double); //結(jié)果介于[-PI/2, PI/2]
double acos (double); //結(jié)果介于[0, PI]
double atan (double); //反正切(主值), 結(jié)果介于[-PI/2, PI/2]
double atan2 (double, double); //反正切(整圓值), 結(jié)果介于[-PI, PI]
- 雙曲三角函數(shù)
double sinh (double);
double cosh (double);
double tanh (double);
- 指數(shù)與對(duì)數(shù)
double exp (double); //求取自然數(shù)e的冪
double sqrt (double); //開(kāi)平方
double log (double); //以e為底的對(duì)數(shù)
double log10 (double); //以10為底的對(duì)數(shù)
double pow(double x, double y; //計(jì)算以x為底數(shù)的y次冪
float powf(float x, float y); //功能與pow一致茎毁，只是輸入與輸出皆為浮點(diǎn)數(shù)
- 取整
double ceil (double); //取上整
double floor (double); //取下整
- 絕對(duì)值
double fabs (double); //求絕對(duì)值
double cabs(struct complex znum) ; //求復(fù)數(shù)的絕對(duì)值
- 標(biāo)準(zhǔn)化浮點(diǎn)數(shù)
double frexp (double f, int *p); // 標(biāo)準(zhǔn)化浮點(diǎn)數(shù), f = x * 2^p, 已知f求x, p ( x介于[0.5, 1] )
double ldexp (double x, int p); //與frexp相反, 已知x, p求f
- 取整與取余
double modf (double, double*); //將參數(shù)的整數(shù)部分通過(guò)指針回傳, 返回小數(shù)部分
double fmod (double, double); //返回兩參數(shù)相除的余數(shù)
- 其他
double hypot(double x, double y); //已知直角三角形兩個(gè)直角邊長(zhǎng)度酌呆，求斜邊長(zhǎng)度
double ldexp(double x, int exponent); //計(jì)算x*(2的exponent次冪)
double poly(double x, int degree, double coeffs [] ); //計(jì)算多項(xiàng)式
nt matherr(struct exception *e); //數(shù)學(xué)錯(cuò)誤計(jì)算處理程序
