Obtain absolute value (long long type)
long long int __far llabs(long long int j); (C99)
Returns the absolute value of j (size of j), | j |. If the input value of llabs is the smallest negative value, the same value is returned.
This function obtains the absolute value of j (size of j), | j |. If j is a negative number, the result is the reversal of j. If j is not negative, the result is j.