abs(3) Library Functions Manual abs(3) Name abs, labs - integer absolute value Syntax #include <stdlib.h> #include <stdlib.h> long labs(i) long i; int abs(i) int i; long labs(i) long i; Description The and functions return the absolute value of their integer operand. The labs function does the same for a long int. Restrictions Applying the or function to the most negative integer generates a result which is the most negative integer. That is, abs(0x80000000) returns 0x80000000 as a result. See Also floor(3m) abs(3)