Java 中的 strict math getindex()方法
原文:https://www . geesforgeks . org/strict math-get index-method-in-Java/
-
The getExponent(double num) is an inbuilt method of StrictMath class which is used to get the unbiased exponent to be used in the representation of a given double argument. It gives rise to two special results:
- 结果将是翻倍。当给定参数为 NaN 或无穷大时，MAX _ INDEX+1
- 结果是翻倍。当参数为零时，最小指数–1。
语法:
java public static int getExponent(*double num*)参数:该方法接受一个双类型的参数数，其无偏指数应该被找到。
返回值:该方法返回在给定双参数的表示中使用的无偏指数。
示例:
```java Input: num = 75.45 Output: 6.0
Input: num = 0.0 Output: -1023.0
```
下面的程序举例说明了 Java . lang . strict math . getindex()方法:
```java // Java praogram to illustrate the // java.lang.StrictMath.getExponent() import java.lang.*;
public class Geeks {
public static void main(String[] args) {
double value = 93.5;
/ Here it returns the unbiased exponent which is used in the representation of a double/ double exp_Value = StrictMath.getExponent(value); System.out.print("Exponent of " + value + " = "); System.out.println(exp_Value); } } ```
Output:
```java Exponent of 93.5 = 6.0
```
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The getExponent(float num) is an inbuilt method of StrictMath class which is used to get an unbiased exponent, to be used in the representation of a given float argument. It gives rise to two special results:
- 结果将是浮动。当给定参数为 NaN 或无穷大时，MAX _ INDEX+1
- 结果是浮动。当参数为零时，最小指数–1。
语法:
java public static int getExponent(*float num*)参数:这个方法接受一个参数数，这个参数是浮点型的，我们要找到它的无偏指数。
返回值:该方法返回在给定浮点参数的表示中使用的无偏指数。
示例:
```java Input: num = 10254.25f Output: 13.0
Input: num = 10.25f Output: 3.0
```
下面的程序举例说明了 Java . lang . strict math . getindex()方法:
```java // Java praogram to illustrate the // java.lang.StrictMath.getExponent() import java.lang.*;
public class Geeks {
public static void main(String[] args) {
float value = 10254.25f;
/ Here it returns the unbiased exponent which is used in the representation of a float/ double exp_Value = StrictMath.getExponent(value); System.out.print("Exponent of " + value + " = "); System.out.println(exp_Value); } } ```
Output:
```java Exponent of 10254.25 = 13.0
```
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