Originální popis anglicky:
qsort - sorts an array
Návod, kniha: Linux Programmer's Manual
#include <stdlib.h>
void qsort(void *base, size_t nmemb, size_t size,
int(*compar)(const void *, const void *));
The
qsort() function sorts an array with
nmemb elements of size
size. The
base argument points to the start of the array.
The contents of the array are sorted in ascending order according to a
comparison function pointed to by
compar, which is called with two
arguments that point to the objects being compared.
The comparison function must return an integer less than, equal to, or greater
than zero if the first argument is considered to be respectively less than,
equal to, or greater than the second. If two members compare as equal, their
order in the sorted array is undefined.
The
qsort() function returns no value.
SVID 3, POSIX, BSD 4.3, ISO 9899
Library routines suitable for use as the
compar argument include
strcmp,
alphasort, and
versionsort.
For an example of use, see the example on the
bsearch(3) page.
sort(1),
alphasort(3),
strcmp(3),
versionsort(3)
