dlasrt.f (3) Linux Manual Page

dlasrt.f –

Synopsis

Functions/Subroutines

subroutine dlasrt (ID, N, D, INFO)
DLASRT sorts numbers in increasing or decreasing order.

Function/Subroutine Documentation

subroutine dlasrt (characterID, integerN, double precision, dimension( * )D, integerINFO)

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.

Date:

September 2012

Definition at line 89 of file dlasrt.f.

Author

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