dlasrt(3S)

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( * )

IMPLEMENTATION
     These routines are part of the SCSL Scientific Library and can be loaded
     using either the -lscs or the -lscs_mp option.  The -lscs_mp option
     directs the linker to use the multi-processor version of the library.

     When linking to SCSL with -lscs or -lscs_mp, the default integer size is
     4 bytes (32 bits). Another version of SCSL is available in which integers
     are 8 bytes (64 bits).  This version allows the user access to larger
     memory sizes and helps when porting legacy Cray codes.  It can be loaded
     by using the -lscs_i8 option or the -lscs_i8_mp option. A program may use
     only one of the two versions; 4-byte integer and 8-byte integer library
     calls cannot be mixed.

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
SEE ALSO
     INTRO_LAPACK(3S), INTRO_SCSL(3S)

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