div(3) — Linux manual page

div(3)                  Library Functions Manual                  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 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():
           _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).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ div(), ldiv(), lldiv(), imaxdiv()   │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

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)

COLOPHON

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Linux man-pages 6.9.1          2024-05-02                         div(3)

Pages that refer to this page: div_t(3type), remainder(3), strtoimax(3), wcstoimax(3)

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