вычислить частное и остаток от целочисленного деления (compute quotient and remainder of an integer division)
Имя (Name)
div, ldiv, lldiv, imaxdiv - compute quotient and remainder of an
integer division
Синопсис (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
Описание (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.
Возвращаемое значение (Return value)
The div_t (etc.) structure.
Атрибуты (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 │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD. The
functions lldiv() and imaxdiv() were added in C99.
Примеры (Examples)
After
div_t q = div(-5, 3);
the values q.quot and q.rem are -1 and -2, respectively.
Смотри также (See also)
abs(3), remainder(3)
