Java Math 方法
Java Math 类有许多方法，可以让您对数字执行数学计算。
所有 Math 方法
下表列出了所有数学方法:
| 方法 | 描述 | 返回类型 |
|---|---|---|
| abs(x) | Returns the absolute value of x | double|float|int|long |
| acos(x) | Returns the arccosine of x, in radians | double |
| asin(x) | Returns the arcsine of x, in radians | double |
| atan(x) | Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians | double |
| atan2(y,x) | Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta). | double |
| cbrt(x) | Returns the cube root of x | double |
| ceil(x) | Returns the value of x rounded up to its nearest integer | double |
| copySign(x, y) | Returns the first floating point x with the sign of the second floating point y | double |
| cos(x) | Returns the cosine of x (x is in radians) | double |
| cosh(x) | Returns the hyperbolic cosine of a double value | double |
| exp(x) | Returns the value of Ex | double |
| expm1(x) | Returns ex -1 | double |
| floor(x) | Returns the value of x rounded down to its nearest integer | double |
| getExponent(x) | Returns the unbiased exponent used in x | int |
| hypot(x, y) | Returns sqrt(x2 +y2) without intermediate overflow or underflow | double |
| IEEEremainder(x, y) | Computes the remainder operation on x and y as prescribed by the IEEE 754 standard | double |
| log(x) | Returns the natural logarithm (base E) of x | double |
| log10(x) | Returns the base 10 logarithm of x | double |
| log1p(x) | Returns the natural logarithm (base E) of the sum of x and 1 | double |
| max(x, y) | Returns the number with the highest value | double|float|int|long |
| min(x, y) | Returns the number with the lowest value | double|float|int|long |
| nextAfter(x, y) | Returns the floating point number adjacent to x in the direction of y | double|float |
| nextUp(x) | Returns the floating point value adjacent to x in the direction of positive infinity | double|float |
| pow(x, y) | Returns the value of x to the power of y | double |
| random() | Returns a random number between 0 and 1 | double |
| round(x) | Returns the value of x rounded to its nearest integer | int |
| rint() | Returns the double value that is closest to x and equal to a mathematical integer | double |
| signum(x) | Returns the sign of x | double |
| sin(x) | Returns the sine of x (x is in radians) | double |
| sinh(x) | Returns the hyperbolic sine of a double value | double |
| sqrt(x) | Returns the square root of x | double |
| tan(x) | Returns the tangent of an angle | double |
| tanh(x) | Returns the hyperbolic tangent of a double value | double |
| toDegrees(x) | Converts an angle measured in radians to an approx. equivalent angle measured in degrees | double |
| toRadians(x) | Converts an angle measured in degrees to an approx. angle measured in radians | double |
| ulp(x) | Returns the size of the unit of least precision (ulp) of x | double|float |
注意：所有数学方法都是静态的。