abs function — Computes absolute value
float abs(float x) double abs(double x) long double abs(long double x)
The abs
function returns
the absolute value of its argument: if x
< 0, it returns -x
; otherwise, it returns x
.
The abs
function in
<cmath>
is the same as
fabs
. The <cstdlib>
header declares integer
versions of the abs
function.