strictmath

StrictMath類ceil()方法 (StrictMath Class ceil() method)

• ceil() method is available in java.lang package.

  ceil()方法在java.lang包中可用。

• ceil() method is used to return the least or smallest value of the double type value which is greater than or equal to the given parameter.

  ceil()方法用于返回大于或等于給定參數的double類型值的最小值或最小值。

• ceil() method is a static method so this method is accessible with the class name too.

  ceil()方法是靜態(tài)方法，因此也可以使用類名訪問此方法。

• ceil() method does not throw any exception at the time of ceiling the given parameter.

  在給定參數設置上限時， ceil()方法不會引發(fā)任何異常。

Syntax:

句法：

public static double ceil(double d);

Parameter(s):

參數：

• double d – represents the double type value whose least value to be found.

  double d –表示要找到其最小值的double類型值。

Return value:

返回值：

The return type of this method is double – it returns least value of the given parameter.

該方法的返回類型為double-返回給定參數的最小值。

Note:

注意：

• If we pass NaN as an argument, method returns the same value (NaN).

  如果我們將NaN作為參數傳遞，則方法將返回相同的值(NaN)。

• If we pass zero (0), method returns the same value with the same sign.

  如果傳遞零(0)，則方法將返回具有相同符號的相同值。

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

  如果我們傳遞一個無窮大，則方法將返回帶有相同符號的相同值。

• If we pass an argument which is less than 0, but greater than -1.0, method returns -0.0.

  如果我們傳遞的參數小于0但大于-1.0，則方法返回-0.0。

• If we pass an argument whose value after the decimal point is greater than 0, method returns the value incremented by 1.

  如果我們傳遞的參數的小數點后的值大于0，則方法返回的值將增加1。

Example:

例：

// Java program to demonstrate the example // of ceil(double d) method of StrictMath Class.public class Ceil {public static void main(String[] args) {// Variable Declarationdouble d1 = -0.0;double d2 = 0.0;double d3 = -7.0 / 0.0;double d4 = 7.0 / 0.0;double d5 = -0.6;double d6 = 1000.0;double d7 = 1000.4;// Display previous value of d1,d2,d3,d4,d5 ,d6 and d7System.out.println("d1: " + d1);System.out.println("d2: " + d2);System.out.println("d3: " + d3);System.out.println("d4: " + d4);System.out.println("d5: " + d5);System.out.println("d6: " + d6);System.out.println("d7: " + d7);// Here , we will get (-0.0) because we are passing // parameter (-0.6) because passed value is less than 0 // but greater than -1.0System.out.println("StrictMath.ceil(d1): " + StrictMath.ceil(d1));// Here , we will get (0.0) because we are passing parameter (0.0)System.out.println("StrictMath.ceil(d2): " + StrictMath.ceil(d2));// Here , we will get (-Infinity) because we are passing parameter (-7.0/0.0) System.out.println("StrictMath.ceil(d3): " + StrictMath.ceil(d3));// Here , we will get (Infinity) because we are passing parameter (7.0/0.0) System.out.println("StrictMath.ceil(d4): " + StrictMath.ceil(d4));// Here , we will get (-0.0) because we are passing // parameter (-0.6) because passed value is less than 0 // but greater than -1.0System.out.println("StrictMath.ceil(d5): " + StrictMath.ceil(d5));// Here , we will get (1000.0) because we are passing // parameter (1000.0) because passed value after decimal // point is not greater than 0 so the same number is //returnedSystem.out.println("StrictMath.ceil(d6): " + StrictMath.ceil(d6));// Here , we will get (1001.0) because we are passing // parameter (1000.4) because passed value after decimal // point is greater than 0 so the number is incremented by 1 is returnedSystem.out.println("StrictMath.ceil(d7): " + StrictMath.ceil(d7));} }

Output

輸出量

d1: -0.0 d2: 0.0 d3: -Infinity d4: Infinity d5: -0.6 d6: 1000.0 d7: 1000.4 StrictMath.ceil(d1): -0.0 StrictMath.ceil(d2): 0.0 StrictMath.ceil(d3): -Infinity StrictMath.ceil(d4): Infinity StrictMath.ceil(d5): -0.0 StrictMath.ceil(d6): 1000.0 StrictMath.ceil(d7): 1001.0

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

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