abs

ABS(3P)                    POSIX Programmer's Manual                   ABS(3P)



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


NAME
       abs — return an integer absolute value

SYNOPSIS
       #include <stdlib.h>

       int abs(int i);

DESCRIPTION
       The functionality described on this reference page is aligned with the
       ISO C standard. Any conflict between the requirements described here
       and the ISO C standard is unintentional. This volume of POSIX.1‐2008
       defers to the ISO C standard.

       The abs() function shall compute the absolute value of its integer
       operand, i.  If the result cannot be represented, the behavior is
       undefined.

RETURN VALUE
       The abs() function shall return the absolute value of its integer
       operand.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

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

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       fabs(), labs()

       The Base Definitions volume of POSIX.1‐2008, <stdlib.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group.  (This is
       POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be obtained online
       at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2013                              ABS(3P)