1LABS(3P)                   POSIX Programmer's Manual                  LABS(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       labs, llabs — return a long integer absolute value
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SYNOPSIS

15       #include <stdlib.h>
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17       long labs(long i);
18       long long llabs(long long i);
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DESCRIPTION

21       The functionality described on this reference page is aligned with  the
22       ISO C  standard.  Any  conflict between the requirements described here
23       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2017
24       defers to the ISO C standard.
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26       The  labs() function shall compute the absolute value of the long inte‐
27       ger operand i.  The llabs() function shall compute the  absolute  value
28       of  the  long  long  integer operand i.  If the result cannot be repre‐
29       sented, the behavior is undefined.
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RETURN VALUE

32       The labs() function shall return the absolute value of the long integer
33       operand.
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35       The  llabs()  function shall return the absolute value of the long long
36       integer operand.
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ERRORS

39       No errors are defined.
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41       The following sections are informative.
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EXAMPLES

44       None.
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APPLICATION USAGE

47       None.
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RATIONALE

50       None.
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FUTURE DIRECTIONS

53       None.
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SEE ALSO

56       abs()
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58       The Base Definitions volume of POSIX.1‐2017, <stdlib.h>
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61       Portions of this text are reprinted and reproduced in  electronic  form
62       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
63       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
64       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
65       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
66       event of any discrepancy between this version and the original IEEE and
67       The Open Group Standard, the original IEEE and The Open Group  Standard
68       is  the  referee document. The original Standard can be obtained online
69       at http://www.opengroup.org/unix/online.html .
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71       Any typographical or formatting errors that appear  in  this  page  are
72       most likely to have been introduced during the conversion of the source
73       files to man page format. To report such errors,  see  https://www.ker‐
74       nel.org/doc/man-pages/reporting_bugs.html .
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78IEEE/The Open Group                  2017                             LABS(3P)
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