C fabs() function

C fabs() function - Absolute value function

Syntax:

double fabs(double x)

The fabs() function is used to calculate the absolute value of the floating-point argument x.

Parameters:

Return value from fabs()

• This function returns the absolute value of x.

Example: fabs() function

The following example shows the usage of fabs() function.

#include <math.h>
#include <stdio.h>
 
int main(void)
{
   double x, y;
 
   x = -7.837345;
   y = fabs(x); 
   printf("fabs( %lf ) = %lf\n", x, y);
   x = -12.22;
   y = fabs(x); 
   printf("\nfabs( %lf ) = %lf\n", x, y);
   x = 34.890;
   y = fabs(x); 
   printf("\nfabs( %lf ) = %lf\n", x, y);

} 

Output:

fabs( -7.837345 ) = 7.837345

fabs( -12.220000 ) = 12.220000

fabs( 34.890000 ) = 34.890000

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