<colgroup> <col> <col width="60%"> <col width="15%"> </colgroup> <thead> <tr> <th>方法</th> <th>描述</th> <th>返回类型</th> </tr> </thead> <tbody> <tr> <td><b>abs(x)</b></td> <td>返回x的绝对值</td> <td>double|float|int|long</td> </tr> <tr> <td><b>acos(x)</b></td> <td>返回弧度的x的反余弦值</td> <td>double</td> </tr> <tr> <td><b>asin(x)</b></td> <td>以弧度返回x的反正弦值</td> <td>double</td> </tr> <tr> <td><b>atan(x)</b></td> <td>返回x的反正切值作为-PI / 2和PI / 2弧度之间的数值</td> <td>double</td> </tr> <tr> <td><b>atan2(y,x)</b></td> <td>返回从直角坐标（x，y）转换为极坐标（r，theta）的角度theta。</td> <td>double</td> </tr> <tr> <td><b>cbrt(x)</b></td> <td>返回x的立方根</td> <td>double</td> </tr> <tr> <td><b>ceil(x)</b></td> <td>返回x的值，四舍五入到最接近的整数</td> <td>double</td> </tr> <tr> <td><b>copySign(x, y)</b></td> <td>返回带有第二个浮点y的符号的第一个浮点x</td> <td>double</td> </tr> <tr> <td><b>cos(x)</b></td> <td>返回x的余弦（x以弧度表示）</td> <td>double</td> </tr> <tr> <td><b>cosh(x)</b></td> <td>返回双精度值的双曲余弦值</td> <td>double</td> </tr> <tr> <td><b>exp(x)</b></td> <td>返回Ex的值</td> <td>double</td> </tr> <tr> <td><b>expm1(x)</b></td> <td>返回ex -1</td> <td>double</td> </tr> <tr> <td><b>floor(x)</b></td> <td>返回x的值，四舍五入到最接近的整数</td> <td>double</td> </tr> <tr> <td><b>getExponent(x)</b></td> <td>返回x中使用的无偏指数</td> <td>int</td> </tr> <tr> <td><b>hypot(x, y)</b></td> <td>返回sqrt（x2 + y2），中间无上溢或下溢</td> <td>double</td> </tr> <tr> <td><b>IEEEremainder(x, y)</b></td> <td>按照IEEE 754标准的规定计算x和y的余数运算</td> <td>double</td> </tr> <tr> <td><b>log(x)</b></td> <td>返回x的自然对数（以E为底）</td> <td>double</td> </tr> <tr> <td><b>log10(x)</b></td> <td>返回x的以10为底的对数</td> <td>double</td> </tr> <tr> <td><b>log1p(x)</b></td> <td>返回x和1之和的自然对数（以E为底）</td> <td>double</td> </tr> <tr> <td><b>max(x, y)</b></td> <td>返回具有最大值的数字</td> <td>double|float|int|long</td> </tr> <tr> <td><b>min(x, y)</b></td> <td>返回具有最小值的数字</td> <td>double|float|int|long</td> </tr> <tr> <td><b>nextAfter(x, y)</b></td> <td>返回在y方向上与x相邻的浮点数</td> <td>double|float</td> </tr> <tr> <td><b>nextUp(x)</b></td> <td>返回在正无穷大方向上与x相邻的浮点值</td> <td>double|float</td> </tr> <tr> <td><b>pow(x, y)</b></td> <td>将x的值返回为y的幂</td> <td>double</td> </tr> <tr> <td><b>random()</b></td> <td>返回0到1之间的随机数</td> <td>double</td> </tr> <tr> <td><b>round(x)</b></td> <td>返回x的值四舍五入到最接近的整数</td> <td>int</td> </tr> <tr> <td><b>rint()</b></td> <td>返回最接近x且等于数学整数的double值</td> <td>double</td> </tr> <tr> <td><b>signum(x)</b></td> <td>返回x的符号</td> <td>double</td> </tr> <tr> <td><b>sin(x)</b></td> <td>返回x的正弦（x以弧度表示）</td> <td>double</td> </tr> <tr> <td><b>sinh(x)</b></td> <td>返回双精度值的双曲正弦值</td> <td>double</td> </tr> <tr> <td><b>sqrt(x)</b></td> <td>返回x的平方根</td> <td>double</td> </tr> <tr> <td><b>tan(x)</b></td> <td>返回角度的切线</td> <td>double</td> </tr> <tr> <td><b>tanh(x)</b></td> <td>返回双精度值的双曲正切</td> <td>double</td> </tr> <tr> <td><b>toDegrees(x)</b></td> <td>将以弧度为单位的角度转换为大约等效角度，以度为单位</td> <td>double</td> </tr> <tr> <td><b>toRadians(x)</b></td> <td>将以度为单位的角度转换为大约弧度角</td> <td>double</td> </tr> <tr> <td><b>ulp(x)</b></td> <td>返回x的最小精度（ulp）单位的大小</td> <td>double|float</td> </tr> </tbody> 版权声明：
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