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Aymeric Wibo
98ffaae49f
No need to have 4 separate manpages for these functions. Use opportunity to change parameter names in the source from j -> i to reflect the name used in POSIX. (The ISO C standard uses j but i is a better name anyway.) Reviewed by: des, rpokala Approved by: rpokala Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D55361
104 lines
2.8 KiB
Plaintext
104 lines
2.8 KiB
Plaintext
.\" Copyright (c) 1990, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\" Copyright (c) 2026 Aymeric Wibo <[email protected]>
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the American National Standards Committee X3, on Information
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.\" Processing Systems.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd February 19, 2026
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.Dt ABS 3
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.Os
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.Sh NAME
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.Nm abs ,
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.Nm labs ,
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.Nm llabs ,
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.Nm imaxabs
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.Nd return absolute value for integer types
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.Sh SYNOPSIS
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.Lb libc
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.In stdlib.h
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.Ft int
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.Fn abs "int i"
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.Ft long
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.Fn labs "long i"
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.Ft long long
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.Fn llabs "long long i"
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.In inttypes.h
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.Ft intmax_t
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.Fn imaxabs "intmax_t i"
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.Sh DESCRIPTION
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The
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.Fn abs ,
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.Fn labs ,
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.Fn llabs ,
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and
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.Fn imaxabs
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functions compute the absolute value of
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.Fa i .
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.Sh RETURN VALUES
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The
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.Fn abs ,
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.Fn labs ,
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.Fn llabs ,
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and
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.Fn imaxabs
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functions return the absolute value.
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.Sh SEE ALSO
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.Xr cabs 3 ,
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.Xr fabs 3 ,
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.Xr floor 3 ,
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.Xr hypot 3
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.Sh STANDARDS
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The
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.Fn abs ,
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.Fn labs ,
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.Fn llabs ,
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and
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.Fn imaxabs
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functions conform to
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.St -isoC-2023
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and
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.St -p1003.1-2024 .
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.Sh HISTORY
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The
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.Fn abs
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function first appeared in
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.At v6 .
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The
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.Fn labs
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function first appeared in
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.Bx 4.3 .
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The
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.Fn llabs
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and
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.Fn imaxabs
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functions first appeared in
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.Fx 5.0 .
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.Sh BUGS
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The absolute value of the most negative integer remains negative.
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