Floating-point absolute value function
View other versions (2)
Contents  |
|
Interface
#include <math.h>
| double | fabs (double x) |
| long | fabsl (long double x) |
| float | fabsf (float x) |
Description
The
fabs functions compute the absolute value of a floating-point number
x, which is given by:
Example 1:
#include <stdio.h>
#include <math.h>
int main(void)
{
float number = -1234.0;
printf("number: %.2f absolute value: %.2f\n", number, fabs(number));
return 0;
}
Output:
number: -1234.00 absolute value: 1234.00
Special Values
fabs (
±0 ) returns 0.
fabs (
±∞ ) returns +∞.
See Also
abs,
ceil,
floorStandards
The
fabs functions conform to ISO/IEC 9899:1999(E).
Last Modified: 2009-04-22 22:59:46 Page Rendered: 2010-03-12 10:43:22
All Modules
