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RedHat 9 (Linux i386) - man page for qsort (redhat section 3)

QSORT(3)				      Linux Programmer's Manual 				     QSORT(3)

NAME
qsort - sorts an array
SYNOPSIS
#include <stdlib.h> void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *));
DESCRIPTION
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 com- par, 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.
RETURN VALUE
The qsort() function returns no value.
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
SEE ALSO
sort(1)
GNU
1993-03-29 QSORT(3)


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