dlasrt(3F)

NAME
     DLASRT - the numbers in D in increasing order (if ID = 'I') or in
     decreasing order (if ID = 'D' )

SYNOPSIS
     SUBROUTINE DLASRT( ID, N, D, INFO )

         CHARACTER      ID

         INTEGER        INFO, N

         DOUBLE         PRECISION D( * )

PURPOSE
     Sort the numbers in D in increasing order (if ID = 'I') or in decreasing
     order (if ID = 'D' ).

     Use Quick Sort, reverting to Insertion sort on arrays of
     size <= 20. Dimension of STACK limits N to about 2**32.


ARGUMENTS
     ID      (input) CHARACTER*1
             = 'I': sort D in increasing order;
             = 'D': sort D in decreasing order.

     N       (input) INTEGER
             The length of the array D.

     D       (input/output) DOUBLE PRECISION array, dimension (N)
             On entry, the array to be sorted.  On exit, D has been sorted
             into increasing order (D(1) <= ... <= D(N) ) or into decreasing
             order (D(1) >= ... >= D(N) ), depending on ID.

     INFO    (output) INTEGER
             = 0:  successful exit
             < 0:  if INFO = -i, the i-th argument had an illegal value