div(3) - Linux manual page (original) (raw)

div(3) Library Functions Manual div(3)

NAME top

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

LIBRARY top

   Standard C library (_libc_, _-lc_)

SYNOPSIS top

   **#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 top

   The **div**() function computes the value _numerator_/_denominator_ and
   returns the quotient and remainder in a structure named _divt_ 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 top

   The _divt_ (etc.) structure.

ATTRIBUTES top

   For an explanation of the terms used in this section, see
   [attributes(7)](../man7/attributes.7.html).
   ┌──────────────────────────────────────┬───────────────┬─────────┐
   │ **Interface** │ **Attribute** │ **Value** │
   ├──────────────────────────────────────┼───────────────┼─────────┤
   │ **div**(), **ldiv**(), **lldiv**(), **imaxdiv**()    │ Thread safety │ MT-Safe │
   └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS top

   C11, POSIX.1-2008.

HISTORY top

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

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

EXAMPLES top

   After

       div_t q = div(-5, 3);

   the values _q.quot_ and _q.rem_ are -1 and -2, respectively.

SEE ALSO top

   [abs(3)](../man3/abs.3.html), [remainder(3)](../man3/remainder.3.html)

COLOPHON top

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Linux man-pages 6.10 2024-07-23 div(3)

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