--- rpl/lapack/lapack/dlarrf.f	2017/06/17 11:06:25	1.20
+++ rpl/lapack/lapack/dlarrf.f	2018/05/29 06:55:19	1.21
@@ -193,7 +193,7 @@
      $                   SPDIAM, CLGAPL, CLGAPR, PIVMIN, SIGMA,
      $                   DPLUS, LPLUS, WORK, 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..--
 *     June 2016
@@ -239,6 +239,13 @@
 *     .. Executable Statements ..
 *
       INFO = 0
+*
+*     Quick return if possible
+*
+      IF( N.LE.0 ) THEN
+         RETURN
+      END IF
+*
       FACT = DBLE(2**KTRYMAX)
       EPS = DLAMCH( 'Precision' )
       SHIFT = 0