strictmath

StrictMath類rint()方法 (StrictMath Class rint() method)

• rint() Method is available in java.lang package.

  rint()方法在java.lang包中可用。

• rint() Method is used to return the double type value and if the value of the given argument after decimal point is greater than 4 then the value is incremented by 1 before the decimal point is returned else if the value of the given argument after decimal point is less than or equal to 4 then the same value before the decimal point is returned.

  rint()方法用于返回雙精度類型值，如果小數(shù)點(diǎn)后給定參數(shù)的值大于4，則在返回小數(shù)點(diǎn)前將值加1，否則，如果小數(shù)點(diǎn)后給定參數(shù)的值如果小數(shù)點(diǎn)小于或等于4，則返回小數(shù)點(diǎn)前的相同值。

• rint() Method is a static method so it is accessible with the class name and if we try to access the method with the class object then we will not get any error.

  rint()方法是一個(gè)靜態(tài)方法，因此可以使用類名進(jìn)行訪問(wèn)，如果嘗試使用類對(duì)象訪問(wèn)該方法，則不會(huì)出現(xiàn)任何錯(cuò)誤。

• rint() Method does not throw any exception.

  rint()方法不會(huì)引發(fā)任何異常。

Syntax:

句法：

public static double rint(double d);

Parameter(s):

參數(shù)：

• double d – represents a double type value.

  double d –表示雙精度型值。

Return value:

返回值：

The return type of the method is double, it returns the double floating point number which will be equivalent to mathematical integer.

該方法的返回類型為double ，它返回等于數(shù)學(xué)整數(shù)的雙精度浮點(diǎn)數(shù)。

Note:

注意：

• If we pass NaN, the method returns the NaN.

  如果傳遞NaN，則該方法返回NaN。

• If we an infinity, the method returns the same (i.e. infinity).

  如果我們無(wú)窮大，則該方法將返回相同的值(即無(wú)窮大)。

• If we pass an argument whose value after the decimal point is greater than 4, the method returns the value incremented by 1 before the decimal point.

  如果我們傳遞的參數(shù)的小數(shù)點(diǎn)后的值大于4，則該方法返回的值在小數(shù)點(diǎn)前增加1。

• If we pass zero, the method returns the same value with the same sign.

  如果傳遞零，則該方法返回具有相同符號(hào)的相同值。

Example:

例：

// Java program to demonstrate the example of // rint(double d) method of StrictMath Class.public class Rint {public static void main(String[] args) {// variable declarationsdouble d1 = -0.0;double d2 = 0.0;double d3 = -1.0 / 0.0;double d4 = 1.0 / 0.0;double d5 = 1234.56;double d6 = 1234.12;// Here , we will get (-0.0) because we are // passing parameter whose value is (-0.0)System.out.println("StrictMath.rint(d1): " + StrictMath.rint(d1));// Here , we will get (0.0) and we are // passing parameter whose value is (0.0)System.out.println("StrictMath.rint(d2): " + StrictMath.rint(d2));// Here , we will get (-Infinity) and we are // passing parameter whose value is (-Infinity)System.out.println("StrictMath.rint(d3): " + StrictMath.rint(d3));// Here , we will get (Infinity) and we are// passing parameter whose value is (Infinity)System.out.println("StrictMath.rint(d4): " + StrictMath.rint(d4));// Here , we will get (1235.0) and we are // passing parameter whose value is (1234.56)System.out.println("StrictMath.rint(d5): " + StrictMath.rint(d5));// Here , we will get (1234.0) and we are // passing parameter whose value is (1234.12)System.out.println("StrictMath.rint(d6): " + StrictMath.rint(d6));} }

Output

輸出量

StrictMath.rint(d1): -0.0 StrictMath.rint(d2): 0.0 StrictMath.rint(d3): -Infinity StrictMath.rint(d4): Infinity StrictMath.rint(d5): 1235.0 StrictMath.rint(d6): 1234.0

翻譯自: https://www.includehelp.com/java/strictmath-rint-method-with-example.aspx

strictmath

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