--- rpl/lapack/lapack/dlarrc.f	2012/12/14 14:22:34	1.12
+++ rpl/lapack/lapack/dlarrc.f	2023/08/07 08:38:57	1.20
@@ -2,25 +2,25 @@
 *
 *  =========== 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 DLARRC + dependencies 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlarrc.f"> 
-*> [TGZ]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlarrc.f"> 
-*> [ZIP]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlarrc.f"> 
+*> Download DLARRC + dependencies
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlarrc.f">
+*> [TGZ]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlarrc.f">
+*> [ZIP]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlarrc.f">
 *> [TXT]</a>
-*> \endhtmlonly 
+*> \endhtmlonly
 *
 *  Definition:
 *  ===========
 *
 *       SUBROUTINE DLARRC( JOBT, N, VL, VU, D, E, PIVMIN,
 *                                   EIGCNT, LCNT, RCNT, INFO )
-* 
+*
 *       .. Scalar Arguments ..
 *       CHARACTER          JOBT
 *       INTEGER            EIGCNT, INFO, LCNT, N, RCNT
@@ -29,7 +29,7 @@
 *       .. Array Arguments ..
 *       DOUBLE PRECISION   D( * ), E( * )
 *       ..
-*  
+*
 *
 *> \par Purpose:
 *  =============
@@ -60,12 +60,13 @@
 *> \param[in] VL
 *> \verbatim
 *>          VL is DOUBLE PRECISION
+*>          The lower bound for the eigenvalues.
 *> \endverbatim
 *>
 *> \param[in] VU
 *> \verbatim
 *>          VU is DOUBLE PRECISION
-*>          The lower and upper bounds for the eigenvalues.
+*>          The upper bound for the eigenvalues.
 *> \endverbatim
 *>
 *> \param[in] D
@@ -114,14 +115,12 @@
 *  Authors:
 *  ========
 *
-*> \author Univ. of Tennessee 
-*> \author Univ. of California Berkeley 
-*> \author Univ. of Colorado Denver 
-*> \author NAG Ltd. 
-*
-*> \date September 2012
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
 *
-*> \ingroup auxOTHERauxiliary
+*> \ingroup OTHERauxiliary
 *
 *> \par Contributors:
 *  ==================
@@ -136,10 +135,9 @@
       SUBROUTINE DLARRC( JOBT, N, VL, VU, D, E, PIVMIN,
      $                            EIGCNT, LCNT, RCNT, INFO )
 *
-*  -- LAPACK auxiliary routine (version 3.4.2) --
+*  -- LAPACK auxiliary routine --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-*     September 2012
 *
 *     .. Scalar Arguments ..
       CHARACTER          JOBT
@@ -169,6 +167,13 @@
 *     .. Executable Statements ..
 *
       INFO = 0
+*
+*     Quick return if possible
+*
+      IF( N.LE.0 ) THEN
+         RETURN
+      END IF
+*
       LCNT = 0
       RCNT = 0
       EIGCNT = 0
@@ -238,6 +243,6 @@
 
       RETURN
 *
-*     end of DLARRC
+*     End of DLARRC
 *
       END