


      QSORT(3F)                   (bsd 4.2)                   QSORT(3F)



      NAME
           qsort - quick sort

      SYNTAX
           subroutine qsort (array, len, isize, compar)
           external compar
           integer*2 compar

      DESCRIPTION
           One dimensional array contains the elements to be sorted.
           len is the number of elements in the array.  isize is the
           size of an element, typically -

                4 for integer and real
                8 for double precision or complex
                16 for double complex
                (length of character object) for character arrays

           Compar is the name of a user supplied integer*2 function
           that will determine the sorting order.  This function will
           be called with 2 arguments that will be elements of array.
           The function must return -

                negative if arg 1 is considered to precede arg 2
                zero if arg 1 is equivalent to arg 2
                positive if arg 1 is considered to follow arg 2

           On return, the elements of array will be sorted.

      FILES
           /usr/lib/libU77.a

      SEE ALSO
           qsort(3C)





















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