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RedHat 9 (Linux i386) - man page for imaxabs (redhat section 3)

ABS(3)				    Linux Programmer's Manual				   ABS(3)

NAME
       abs, labs, llabs, imaxabs - compute the absolute value of an integer.

SYNOPSIS
       #include <stdlib.h>

       int abs(int j);
       long int labs(long int j);
       long long int llabs(long long int j);

       #include <inttypes.h>

       intmax_t imaxabs(intmax_t j);

DESCRIPTION
       The  abs()  function  computes  the absolute value of the integer argument j.  The labs(),
       llabs() and imaxabs() functions compute the absolute value of the argument j of the appro-
       priate integer type for the function.

RETURN VALUE
       Returns	the  absolute  value of the integer argument, of the appropriate integer type for
       the function.

CONFORMING TO
       SVID 3, POSIX.1, BSD 4.3, ISO/IEC 9899 (C99).  POSIX.1 (1996 edition)  only  requires  the
       abs() function.	ISO/IEC 9899:1990 (C89) only includes the abs() and labs() functions; the
       functions llabs() and imaxabs() were added in C99.

NOTES
       Trying to take the absolute value of the most negative integer is not defined.

       The llabs() function is included in glibc since version 2.0, but is not in libc5 or libc4.
       The imaxabs() function is included in glibc since version 2.1.1.

       For llabs() to be declared, it may be necessary to define _ISOC99_SOURCE or _ISOC9X_SOURCE
       (depending on the version of glibc) before including any standard headers.

       GCC handles abs() and labs() as builtin functions.  GCC 3.0 also handles llabs() and imax-
       abs() as builtins.

SEE ALSO
       ceil(3), floor(3), fabs(3), rint(3)

GNU					    2000-12-17					   ABS(3)


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