string checking Post: 302210891

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qsort

qsort(3C)																 qsort(3C)

NAME

       qsort() - quicksort

SYNOPSIS

DESCRIPTION

       is an implementation of the quicksort algorithm.  It sorts a table of data in place.

	      base	  Pointer to the element at the base of the table.

	      nel	  Number of elements in the table.

	      size	  Size of each element in the table.

	      compar	  Name	of  the  comparison  function,	which is called with two arguments that point to the elements being compared.  The
			  function passed as compar must return an integer less than, equal to, or greater than zero,  according  to  whether  its
			  first  argument  is  to be considered less than, equal to, or greater than the second.  uses this same return convention
			  (see string(3C)).

NOTES

       The pointer to the base of the table should be of type pointer-to-element, and cast to type pointer-to-void.

       The comparison function need not compare every byte; thus, arbitrary data can be contained in the elements in addition to the values  being
       compared.

       The order in the output of two items which compare as equal is unpredictable.

WARNINGS

       If size is zero, a divide-by-zero error might be generated.

SEE ALSO

       sort(1), bsearch(3C), lsearch(3C), string(3C), thread_safety(5).

STANDARDS CONFORMANCE

																	 qsort(3C)

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