1ABS(3P)                    POSIX Programmer's Manual                   ABS(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       abs — return an integer absolute value
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SYNOPSIS

15       #include <stdlib.h>
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17       int abs(int i);
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DESCRIPTION

20       The functionality described on this reference page is aligned with  the
21       ISO C  standard.  Any  conflict between the requirements described here
22       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2017
23       defers to the ISO C standard.
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25       The  abs() function shall compute the absolute value of its integer op‐
26       erand, i.  If the result cannot be represented, the behavior  is  unde‐
27       fined.
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RETURN VALUE

30       The abs() function shall return the absolute value of its integer oper‐
31       and.
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ERRORS

34       No errors are defined.
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36       The following sections are informative.
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EXAMPLES

39       None.
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APPLICATION USAGE

42       In two's-complement representation, the absolute value of the  negative
43       integer with largest magnitude {INT_MIN} might not be representable.
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RATIONALE

46       None.
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FUTURE DIRECTIONS

49       None.
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SEE ALSO

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