The Open Group Base Specifications Issue 7, 2018 edition
IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008)
Copyright © 2001-2018 IEEE and The Open GroupA newer edition of this document exists here
NAME
labs, llabs - return a long integer absolute value
SYNOPSIS
#include <stdlib.h>
long labs(long i);
long long llabs(long long i);
DESCRIPTION
[CX] ![[Option Start]](../images/opt-start.gif)
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.1-2017 defers to the ISO C
standard.
![[Option End]](../images/opt-end.gif)
The labs() function shall compute the absolute value of the long integer operand i. The llabs()
function shall compute the absolute value of the long long integer operand i. If the result cannot be represented,
the behavior is undefined.
RETURN VALUE
The labs() function shall return the absolute value of the long integer operand.
The llabs() function shall return the absolute value of the long long integer operand.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
abs
XBD <stdlib.h>
CHANGE HISTORY
First released in Issue 4. Derived from the ISO C standard.
Issue 6
The llabs() function is added for alignment with the ISO/IEC 9899:1999 standard.
Issue 7
SD5-XSH-ERN-152 is applied, correcting the RETURN VALUE section.
End of informative text.
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