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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | STANDARDS | HISTORY | EXAMPLES | SEE ALSO | COLOPHON |
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div(3) Library Functions Manual div(3)
div, ldiv, lldiv, imaxdiv - compute quotient and remainder of an
integer division
Standard C library (libc, -lc)
#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
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.
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 │
└──────────────────────────────────────┴───────────────┴─────────┘
C11, POSIX.1-2008.
POSIX.1-2001, C89, C99, SVr4, 4.3BSD.
lldiv() and imaxdiv() were added in C99.
After
div_t q = div(-5, 3);
the values q.quot and q.rem are -1 and -2, respectively.
abs(3), remainder(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.15.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2025-08-11. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
[email protected]
Linux man-pages 6.15 2025-05-17 div(3)
Pages that refer to this page: div_t(3type), remainder(3), strtoimax(3), wcstoimax(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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