C Programming/stdlib.h/div
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div is a function in C programming language that takes two integers as parameters and returns the result of a division between them. It is specified in ANSI-C, and is included from the stdlib.h header when used. [1]
div always rounds towards 0, unlike ordinary integer division in C, where rounding for negative numbers is implementation-dependent.
div
has a prototype as follows:
div_t div (int numerator, int denominator)
The return value, div_t
is a special datatype which is specifically used in storing the results of this function. It is defined as follows:
typedef struct {
int quot;
int rem;
} div_t;
Where quot
stores the quotient and rem
stores the remainder.
ldiv and lldiv are similar functions that divide integers of type long
and long long
, respectively; and return a structure of type ldiv_t
and lldiv_t
, respectively.
ldiv_t ldiv (long numerator, long denominator );
lldiv_t lldiv (long long numerator, long long denominator);
See also
[edit | edit source]- stdlib.h
- stdio.h
References
[edit | edit source]- ↑ http://www.open-std.org/JTC1/SC22/wg14/www/docs/n1124.pdf chapter 7.20.6.2