LDIV
Section: POSIX Programmer's Manual (3P)
Updated: 2017
Page Index
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
ldiv,
lldiv
 compute quotient and remainder of a long division
SYNOPSIS
#include <stdlib.h>
ldiv_t ldiv(long numer, long denom);
lldiv_t lldiv(long long numer, long long denom);
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.12017 defers to the ISO C standard.
These functions shall compute the quotient and remainder of the
division of the numerator
numer
by the denominator
denom.
If the division is inexact, the resulting quotient is the
long
integer (for the
ldiv()
function) or
long long
integer (for the
lldiv()
function) of lesser magnitude that is the nearest to the algebraic
quotient. If the result cannot be represented, the behavior is
undefined; otherwise, quot * denom+rem shall equal
numer.
RETURN VALUE
The
ldiv()
function shall return a structure of type
ldiv_t,
comprising both the quotient and the remainder. The structure shall
include the following members, in any order:

long quot; /* Quotient */
long rem; /* Remainder */
The
lldiv()
function shall return a structure of type
lldiv_t,
comprising both the quotient and the remainder. The structure shall
include the following members, in any order:

long long quot; /* Quotient */
long long rem; /* Remainder */
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
div()
The Base Definitions volume of POSIX.12017,
<stdlib.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.12017, Standard for Information Technology
 Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, 2018 Edition,
Copyright (C) 2018 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group.
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.opengroup.org/unix/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/manpages/reporting_bugs.html .