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+.\" Copyright (c) 1990, 1991, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\" Copyright (c) 2026 Aymeric Wibo <obiwac@freebsd.org>
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd February 19, 2026
+.Dt ABS 3
+.Os
+.Sh NAME
+.Nm abs ,
+.Nm labs ,
+.Nm llabs ,
+.Nm imaxabs
+.Nd return absolute value for integer types
+.Sh SYNOPSIS
+.Lb libc
+.In stdlib.h
+.Ft int
+.Fn abs "int i"
+.Ft long
+.Fn labs "long i"
+.Ft long long
+.Fn llabs "long long i"
+.In inttypes.h
+.Ft intmax_t
+.Fn imaxabs "intmax_t i"
+.Sh DESCRIPTION
+The
+.Fn abs ,
+.Fn labs ,
+.Fn llabs ,
+and
+.Fn imaxabs
+functions compute the absolute value of
+.Fa i .
+.Sh RETURN VALUES
+The
+.Fn abs ,
+.Fn labs ,
+.Fn llabs ,
+and
+.Fn imaxabs
+functions return the absolute value.
+.Sh SEE ALSO
+.Xr cabs 3 ,
+.Xr fabs 3 ,
+.Xr floor 3 ,
+.Xr hypot 3
+.Sh STANDARDS
+The
+.Fn abs ,
+.Fn labs ,
+.Fn llabs ,
+and
+.Fn imaxabs
+functions conform to
+.St -isoC-2023
+and
+.St -p1003.1-2024 .
+.Sh HISTORY
+The
+.Fn abs
+function first appeared in
+.At v6 .
+The
+.Fn labs
+function first appeared in
+.Bx 4.3 .
+The
+.Fn llabs
+and
+.Fn imaxabs
+functions first appeared in
+.Fx 5.0 .
+.Sh BUGS
+The absolute value of the most negative integer remains negative.