lasrt(3)

Usage

Functions

subroutine dlasrt (id, n, d, info)
DLASRT sorts numbers in increasing or decreasing order. subroutine slasrt (id, n, d, info)
SLASRT sorts numbers in increasing or decreasing order.

Detailed Description

Function Documentation

subroutine dlasrt (character id, integer n, double precision, dimension( * ) d, integer info)

DLASRT sorts numbers in increasing or decreasing order.

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.
!>

Parameters

ID

!>          ID is CHARACTER*1
!>          = 'I': sort D in increasing order;
!>          = 'D': sort D in decreasing order.
!>

N

!>          N is INTEGER
!>          The length of the array D.
!>

D

!>          D is 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

!>          INFO is INTEGER
!>          = 0:  successful exit
!>          < 0:  if INFO = -i, the i-th argument had an illegal value
!>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 87 of file dlasrt.f.

subroutine slasrt (character id, integer n, real, dimension( * ) d, integer info)

SLASRT sorts numbers in increasing or decreasing order.