LABS(3) BSD Programmer's Manual LABS(3)
labs, llabs - return the absolute value of a long integer
#include <stdlib.h> long labs(long i); long long llabs(long long j);
The labs() function returns the absolute value of the long integer i. The llabs() function returns the absolute value of the long long integer j.
abs(3), cabs(3), floor(3), math(3)
The labs() and llabs() functions conform to ISO/IEC 9899:1999 ("ISO C99").
The absolute value of the most negative integer remains negative. MirBSD #10-current May 14, 2003 1