DIV

Section: Linux Programmer's Manual (3)
Updated: 2013-07-05
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NAME

div, ldiv, lldiv, imaxdiv - compute quotient and remainder of an integer division

SYNOPSIS

#include <stdlib.h>

div_t div(int numerator, int denominator);


ldiv_t ldiv(long numerator, long denominator);


lldiv_t lldiv(long long numerator, long long denominator);

#include <inttypes.h>

imaxdiv_t imaxdiv(intmax_t numerator, intmax_t denominator);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

lldiv():

: _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
or cc -std=c99

DESCRIPTION

The div() function computes the value numerator/denominator and returns the quotient and remainder in a structure named div_t that contains two integer members (in unspecified order) named quot and rem. The quotient is rounded toward zero. The result satisfies quot*denominator+rem = numerator.

The ldiv(), lldiv(), and imaxdiv() functions do the same, dividing numbers of the indicated type and returning the result in a structure of the indicated name, in all cases with fields quot and rem of the same type as the function arguments.

RETURN VALUE

The div_t (etc.) structure.

ATTRIBUTES

Multithreading (see pthreads(7))

The div(), ldiv(), lldiv(), and imaxdiv() functions are thread-safe.

CONFORMING TO

SVr4, 4.3BSD, C89. C99. The functions lldiv() and imaxdiv() were added in C99.

EXAMPLE

After


        div_t q = div(-5, 3);

the values q.quot and q.rem are -1 and -2, respectively.

COLOPHON

This page is part of release 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.

Index

Multithreading (see pthreads(7))