NAME

imaxabs — return absolute value

SYNOPSIS

#include <inttypes.h>

intmax_t imaxabs(intmax_t j);


DESCRIPTION

^[CX] 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.1-2024 defers to the ISO C standard.

The imaxabs() function shall compute the absolute value of an integer j. If the result cannot be represented, the behavior is undefined.

RETURN VALUE

The imaxabs() function shall return the absolute value.

ERRORS

No errors are defined.

EXAMPLES

None.

APPLICATION USAGE

Since POSIX.1 requires a two's complement representation of intmax_t, the absolute value of the negative integer with the largest magnitude {INTMAX_MIN} is not representable, thus imaxabs(INTMAX_MIN) is undefined.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

imaxdiv

XBD <inttypes.h>

CHANGE HISTORY

First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.

Issue 8

Austin Group Defect 1108 is applied, changing the APPLICATION USAGE section.