dlasrt()

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

DLASRT sorts numbers in increasing or decreasing order.

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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

[in]	ID	!> ID is CHARACTER*1 !> = 'I': sort D in increasing order; !> = 'D': sort D in decreasing order. !>
[in]	N	!> N is INTEGER !> The length of the array D. !>
[in,out]	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. !>
[out]	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.