#include <math.h>
#include <cmath>
| 指数・対数 | ||
|---|---|---|
M_E |
$e$ | 自然対数の底（ネイピア数） |
M_LOG2E |
$log_2(e)$ | |
M_LOG10E |
$log_{10}(e)$ | |
M_LN2 |
$ln(2)$ |
| 円周率 | | |
| M_PI | $\pi$ | 円周率 |
| M_PI_2 | $\frac{\pi}{2}$ | |
| M_PI_4 | $\frac{\pi}{4}$ | |
| M_1_PI | $\frac{1}{\pi}$ | |
| M_2_PI | $\frac{2}{\pi}$ | |
| M_2_SQRTPI | $\frac{2}{\sqrt{\pi}}$ | |
| 平方根 | | |
| M_SQRT2 | $\sqrt{2}$ | 2の平方根 |
| M_SQRT1_2 | $\frac{1}{\sqrt{2}}$ | |
| べき乗 | double pow (double x, double y) |
$x^y$ |
|---|---|---|
| 絶対値 | double fabs (double x ) |
$\left |
| 平方根 | double sqrt(double x) |
$\sqrt{x}$\sqrt{x} |
| べき乗 | double exp(double x) |
$e^x=exp(x)$ |
| --- | --- | --- |
| 絶対値 | double log(double x) | $log_e(x)=ln(x)$ |
| 平方根 | double log10 (double x) | $log_{10}(x)$ |
| 正弦 | double sin(double x) |
$sin(x)$ |
| --- | --- | --- |
| 余弦 | double cos(double x) |
$cos(x)$ |
| 正接 | double tan(double x) |
$tan(x)$ |
| 逆正弦 | double asin(double x) |
$arcsin(x)=sin^{−1}(x)$ |
|---|---|---|
| 逆余弦 | double acos(double x) |
$arccos(x)=cos^{−1}(x)$ |
| 逆正接 | double atan(double x) |
$arctan(x)=tan^{−1}(x)$ |
| 逆正接 | double atan2(double y, double x) |
$arctan( \frac{y}{x} )=tan^{−1}(\frac{y}{x})$ |
| 双曲線正弦 | double sinh(double x) |
$sinh(x)=\frac{e^x-e^{-x}}{2}$ |
|---|---|---|
| 双曲線余弦 | double cosh(double x) |
$cosh(x)=\frac{e^x+e^{-x}}{2}$ |
| 双曲線正接 | double tanh(double x) |
$tanh(x)=\frac{sinh(x)}{cosh(x)}$ |