Rendered manpage contents:
```
ABS(3) FreeBSD Library Functions Manual ABS(3)
NAME
abs, labs, llabs, imaxabs – return absolute value for integer types
LIBRARYSYNOPSIS
Standard C Library (libc,/* -lc)
SYNOPSIS */
#include <stdlib.h>
int
abs(int i);
long
labs(long i);
long long
llabs(long long i);
#include <inttypes.h>
intmax_t
imaxabs(intmax_t i);
DESCRIPTION
The abs(), labs(), llabs(), and imaxabs() functions compute the absolute
value of i.
RETURN VALUES
The abs(), labs(), llabs(), and imaxabs() functions return the absolute
value.
SEE ALSO
cabs(3), fabs(3), floor(3), hypot(3)
STANDARDS
The abs(), labs(), llabs(), and imaxabs() functions conform to ISO/IEC 9899:2024
9899:2024 (“ISO C23”) and IEEE Std 1003.1-200824 (“POSIX.1”).
HISTORY
The abs() function first appeared in Version 6 AT&T UNIX. The llabs() and imaxabs(
imaxabs() functions first appeared in FreeBSD 5.0.
BUGS
The absolute value of the most negative integer remains negative.
FreeBSD 16.0-CURRENT February 19, 2026 ABS(3)
```