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


#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)):




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.


For an explanation of the terms used in this section, see attributes(7).

Interface Attribute Value
div(), ldiv(), lldiv(), imaxdiv() Thread safety MT-Safe

Conforming to

POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD. The functions lldiv() and imaxdiv() were added in C99.



div_t q = div(-5, 3);

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

See Also

abs(3), remainder(3)


This page is part of release 5.04 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 https://www.kernel.org/doc/man-pages/.

Referenced By

remainder(3), strtoimax(3), wcstoimax(3).

The man pages imaxdiv(3), ldiv(3) and lldiv(3) are aliases of div(3).

2016-03-15 Linux Programmer's Manual