DIV(3P) POSIX Programmer's Manual DIV(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.
NAMEdiv — compute the quotient and remainder of an integer division
div_t div(int numer, int denom);
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 div() function shall compute the quotient and remainder of the
division of the numerator numer by the denominator denom. If the divi‐
sion is inexact, the resulting quotient is the integer of lesser magni‐
tude that is the nearest to the algebraic quotient. If the result can‐
not be represented, the behavior is undefined; otherwise,
quot*denom+rem shall equal numer.
The div() function shall return a structure of type div_t, comprising
both the quotient and the remainder. The structure includes the follow‐
ing members, in any order:
int quot; /* quotient */
int rem; /* remainder */
No errors are defined.
The following sections are informative.
The Base Definitions volume of POSIX.1‐2008, <stdlib.h>
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 Electri‐
cal 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 .
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IEEE/The Open Group 2013 DIV(3P)