What does fabs mean in c language?

What does fabs in c language mean?

The fabs function is a function that finds the absolute value. Finding the absolute value of x is the same as the mathematical concept. The function prototype is extern float fabs(float x), and the usage is #include .

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Declaration of fabs() function: double fabs(double x). The parameter x is a floating point value, and this function returns the absolute value of x. The code example is as follows:

int main (){
int a, b;
a = 1234;
b = -344;
printf("The absolute value of %d is %lf", a, fabs(a));
printf("The absolute value of %d is %lf", b, fabs(b));
return(0);}

Compile and run the above program, which will produce the following results:

The absolute value of 1234 is 1234.000000
The absolute value of -344 is 344.000000

Extended information:

fabs The difference between () and abs():

(1) Different parameter objects

abs() takes the absolute value of the integer, while fabs() takes the absolute value of the floating point number.

(2) The function prototype is different:

int abs(int x)
double fabs(double x)

(3) The header file is different:

abs(): #include <stdlib.h>
fabs(): #include <math.h>

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