fabs, fabsf, fabsl - Absolute value of a floating-point number

Definition	#include <math.h> double fabs(double x); float fabsf(float x); (C11) long double fabsl(long double x); (C11) These functions calculate the absolute value of a floating-point number x.
Return val.	Absolute value of the argument: |x|
Example	The following program calculates the absolute value of a floating-point number entered: #include <math.h> #include <stdio.h> int main(void) { double x; printf("Please enter a floating-point number:\n"); if (scanf("%lf", &x) == 1) printf("?%g? = %g\n", x, fabs(x)); return 0; }
See also	abs, cabs, ceil, floor, labs, llabs