double fabs ( double x );
float fabs ( float x );
long double fabs ( long double x ); |
<cmath> |
Compute absolute value
Returns the absolute value of x ( /x/ ).
Parameters
- x
- Floating point value.
Return Value
The absolute value of
x.
Portability
In C, only the
double version of this function exists with this name.
Example
/* fabs example */
#include <stdio.h>
#include <math.h>
int main ()
{
printf ("The absolute value of 3.1416 is %lf\n", fabs (3.1416) );
printf ("The absolute value of -10.6 is %lf\n", fabs (-10.6) );
return 0;
}
|
Output:
The absolute value of 3.1416 is 3.141600
The absolute value of -10.6 is 10.600000
|
See also
| abs | Absolute value (function) |
| labs | Absolute value (function) |
| floor | Round down value (function) |
| ceil | Round up value (function) |
| modf | Break into fractional and integral parts (function) |
