div(3)

NAME#

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

LIBRARY#

Standard C library (libc, -lc)

SYNOPSIS#

#include <stdlib.h>

div_t div(int \nnumerator\n, int \ndenominator\n);\n
\nldiv_t ldiv(long \nnumerator\n, long \ndenominator\n);\n
\nlldiv_t lldiv(long long \nnumerator\n, long long \ndenominator\n);

#include <inttypes.h>

imaxdiv_t imaxdiv(intmax_t \nnumerator\n, intmax_t \ndenominator\n);

lldiv():

\n
    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L

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#

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

STANDARDS#

C11, POSIX.1-2008.

HISTORY#

POSIX.1-2001, C89, C99, SVr4, 4.3BSD.

lldiv() and imaxdiv() were added in C99.

EXAMPLES#

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)