What does fabs mean in c language

fabs is a C language library function used to calculate the absolute value of floating point numbers, that is, regardless of sign. Its prototype is double fabs(double x), the parameter x is the target floating point number, and the return value is its absolute value, which is a non-negative double type.

What are fabs?

fabs is a library function in C language that is used to calculate the absolute value of floating point numbers, that is, regardless of sign.

fabs Function prototype:

<code class="c">double fabs(double x);</code>

Function parameters:

• x: Required Calculate the target floating point number of the absolute value

Return value:

fabs function returns the absolute value of x, which is a non-negative double type value.

Usage of fabs function:

The following is an example of how to use the fabs function in a C program:

<code class="c">#include <stdio.h>
#include <math.h>

int main() {
    // 计算 -5.5 的绝对值
    double absolute_value = fabs(-5.5);

    // 打印绝对值
    printf("绝对值：%.2f\n", absolute_value);

    return 0;
}</code>

Output:

<code>绝对值：5.50</code>

Note:

• fabs function can only handle floating point numbers, not integers.
• If you want to calculate the absolute value of an integer, you can use the abs() function.

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