function
<cmath> <ctgmath>

# abs

```     double abs (double x);
float abs (float x);
long double abs (long double x);
```
```     double abs (double x);
float abs (float x);
long double abs (long double x);
Compute absolute value
Returns the absolute value of x: |x|.

These convenience abs overloads are exclusive of C++. In C, abs is only declared in <stdlib.h> (and operates on `int` values).

Since C++11, additional overloads are provided in this header (`<cmath>`) for the integral types: These overloads effectively cast x to a `double` before calculations (defined for T being any integral type).

### Parameters

x
Value whose absolute value is returned.

### Return Value

The absolute value of x.

### Example

 ``12345678910`` ``````// cmath's abs example #include // std::cout #include // std::abs int main () { std::cout << "abs (3.1416) = " << std::abs (3.1416) << '\n'; std::cout << "abs (-10.6) = " << std::abs (-10.6) << '\n'; return 0; }``````

Output:
 ``` abs (3.1416) = 3.1416 abs (-10.6) = 10.6 ```