--- rpl/lapack/lapack/dlarrr.f	2011/11/21 22:19:34	1.9
+++ rpl/lapack/lapack/dlarrr.f	2018/05/29 06:55:19	1.17
@@ -1,33 +1,33 @@
-*> \brief \b DLARRR
+*> \brief \b DLARRR performs tests to decide whether the symmetric tridiagonal matrix T warrants expensive computations which guarantee high relative accuracy in the eigenvalues.
 *
 *  =========== DOCUMENTATION ===========
 *
-* Online html documentation available at 
-*            http://www.netlib.org/lapack/explore-html/ 
+* Online html documentation available at
+*            http://www.netlib.org/lapack/explore-html/
 *
 *> \htmlonly
-*> Download DLARRR + dependencies 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlarrr.f"> 
-*> [TGZ]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlarrr.f"> 
-*> [ZIP]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlarrr.f"> 
+*> Download DLARRR + dependencies
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlarrr.f">
+*> [TGZ]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlarrr.f">
+*> [ZIP]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlarrr.f">
 *> [TXT]</a>
-*> \endhtmlonly 
+*> \endhtmlonly
 *
 *  Definition:
 *  ===========
 *
 *       SUBROUTINE DLARRR( N, D, E, INFO )
-* 
+*
 *       .. Scalar Arguments ..
 *       INTEGER            N, INFO
 *       ..
 *       .. Array Arguments ..
 *       DOUBLE PRECISION   D( * ), E( * )
 *       ..
-*  
-*  
+*
+*
 *
 *> \par Purpose:
 *  =============
@@ -73,14 +73,14 @@
 *  Authors:
 *  ========
 *
-*> \author Univ. of Tennessee 
-*> \author Univ. of California Berkeley 
-*> \author Univ. of Colorado Denver 
-*> \author NAG Ltd. 
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
 *
-*> \date November 2011
+*> \date June 2017
 *
-*> \ingroup auxOTHERauxiliary
+*> \ingroup OTHERauxiliary
 *
 *> \par Contributors:
 *  ==================
@@ -94,10 +94,10 @@
 *  =====================================================================
       SUBROUTINE DLARRR( N, D, E, INFO )
 *
-*  -- LAPACK auxiliary routine (version 3.4.0) --
+*  -- LAPACK auxiliary routine (version 3.7.1) --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-*     November 2011
+*     June 2017
 *
 *     .. Scalar Arguments ..
       INTEGER            N, INFO
@@ -130,6 +130,13 @@
 *     ..
 *     .. Executable Statements ..
 *
+*     Quick return if possible
+*
+      IF( N.LE.0 ) THEN
+         INFO = 0
+         RETURN
+      END IF
+*
 *     As a default, do NOT go for relative-accuracy preserving computations.
       INFO = 1