labs - Absolute value of an integer (long int)

Definition	#include <stdlib.h> long int labs(long int j); labs calculates the absolute value of an integer j of type long int.
Return val.	|j| undefined	for an integer j. in case of over- or underflow. errno is set to ERANGE to indicate the error.
Note	The absolute value of the highest presentable negative number cannot be presented. If the highest negative number of type long int is specified as argument j, the program is terminated with an error (ERANGE).
See also	abs, cabs, fabs, llabs