Based on the experiments, we can observe that for values of x less than or equal to -100 and greater than or equal to 100, the function returns 0. However, for x equal to 0, the function returns 1.

So, the [DESCRIPTION] of the function can be: 

The function returns 0 for all values of x less than or equal to -100 and greater than or equal to 100. The function returns 1 when x is equal to 0.

[DOMAIN]:
The domain of the function is the set of all real numbers. The function displays unexpected behavior and different outputs in the interval [-100, 100]. 

[CODE]:
Based on the experiments, we can approximate the behavior of the function with the following Python code:

```python
def f(x):
    if x <= -100 or x >= 100:
        return 0
    elif x == 0:
        return 1
```

This code snippet captures the behavior of the function described in the experiments.