--- rpl/lapack/lapack/dlarrk.f	2017/06/17 11:06:25	1.16
+++ rpl/lapack/lapack/dlarrk.f	2018/05/29 06:55:19	1.17
@@ -137,7 +137,7 @@
 *> \author Univ. of Colorado Denver
 *> \author NAG Ltd.
 *
-*> \date December 2016
+*> \date June 2017
 *
 *> \ingroup OTHERauxiliary
 *
@@ -145,10 +145,10 @@
       SUBROUTINE DLARRK( N, IW, GL, GU,
      $                    D, E2, PIVMIN, RELTOL, W, WERR, INFO)
 *
-*  -- LAPACK auxiliary routine (version 3.7.0) --
+*  -- 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..--
-*     December 2016
+*     June 2017
 *
 *     .. Scalar Arguments ..
       INTEGER   INFO, IW, N
@@ -179,6 +179,13 @@
 *     ..
 *     .. Executable Statements ..
 *
+*     Quick return if possible
+*
+      IF( N.LE.0 ) THEN
+         INFO = 0
+         RETURN
+      END IF
+*
 *     Get machine constants
       EPS = DLAMCH( 'P' )