dlasrt.f

Section: LAPACK (3)
Updated: Tue Nov 14 2017
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NAME

dlasrt.f  

SYNOPSIS


 

Functions/Subroutines


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

Function/Subroutine 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.

Date:

June 2016

Definition at line 90 of file dlasrt.f.  

Author

Generated automatically by Doxygen for LAPACK from the source code.


 

Index

NAME
SYNOPSIS
Functions/Subroutines
Function/Subroutine Documentation
subroutine dlasrt (character ID, integer N, double precision, dimension( * ) D, integer INFO)
Author