fabs, fabsf
Calculates the absolute value of the floating-point argument.
double fabs(
double x
);
float fabs(
float x
); // C++ only
long double fabs(
long double x
); // C++ only
float fabsf(
float x
);
Parameters
- x
Floating-point value.
Return Value
fabs returns the absolute value of its argument. There is no error return.
Input |
SEH Exception |
Matherr Exception |
|---|---|---|
± QNAN,IND |
none |
_DOMAIN |
Remarks
C++ allows overloading, so you can call overloads of fabs. In a C program, fabs always takes and returns a double.
Requirements
Function |
Required header |
|---|---|
fabs, fabsf |
<math.h> |
For additional compatibility information, see Compatibility in the Introduction.
Example
See the example for abs.