DIV(3)

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.

SEE ALSO
abs(3), remainder(3)

COLOPHON
This page is part of release 3.65 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.