The use of fabs function in java

The Math.abs() function in Java is used to calculate the absolute value of a number, regardless of its sign. It accepts a parameter of type double and returns an absolute value of type double.

Math.abs() function in Java

Math.abs() function is a built-in function in Java Method used to calculate the absolute value of a number. Absolute value refers to the size of a number regardless of its sign.

Usage

The syntax of the Math.abs() function is as follows:

<code class="java">public static double abs(double a)</code>

Where, a is the target number to calculate the absolute value.

Return value

The Math.abs() function returns an absolute value of type double.

Example

The following example demonstrates how to use the Math.abs() function:

<code class="java">double a = -123.45;
double absValue = Math.abs(a);
System.out.println(absValue); // 输出：123.45</code>

Notes

• Math.abs() function is only applicable to double type data.
• Math.abs() function does not change the value of the target number itself.
• For negative infinity (-Infinity) and positive infinity (Infinity), the Math.abs() function returns positive infinity (Infinity).

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