--- rpl/lapack/lapack/zunmtr.f	2018/05/29 07:18:42	1.16
+++ rpl/lapack/lapack/zunmtr.f	2023/08/07 08:39:45	1.17
@@ -163,18 +163,15 @@
 *> \author Univ. of Colorado Denver
 *> \author NAG Ltd.
 *
-*> \date December 2016
-*
 *> \ingroup complex16OTHERcomputational
 *
 *  =====================================================================
       SUBROUTINE ZUNMTR( SIDE, UPLO, TRANS, M, N, A, LDA, TAU, C, LDC,
      $                   WORK, LWORK, INFO )
 *
-*  -- LAPACK computational routine (version 3.7.0) --
+*  -- LAPACK computational routine --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-*     December 2016
 *
 *     .. Scalar Arguments ..
       CHARACTER          SIDE, TRANS, UPLO
@@ -214,10 +211,10 @@
 *
       IF( LEFT ) THEN
          NQ = M
-         NW = N
+         NW = MAX( 1, N )
       ELSE
          NQ = N
-         NW = M
+         NW = MAX( 1, M )
       END IF
       IF( .NOT.LEFT .AND. .NOT.LSAME( SIDE, 'R' ) ) THEN
          INFO = -1
@@ -234,7 +231,7 @@
          INFO = -7
       ELSE IF( LDC.LT.MAX( 1, M ) ) THEN
          INFO = -10
-      ELSE IF( LWORK.LT.MAX( 1, NW ) .AND. .NOT.LQUERY ) THEN
+      ELSE IF( LWORK.LT.NW .AND. .NOT.LQUERY ) THEN
          INFO = -12
       END IF
 *
@@ -256,7 +253,7 @@
      $              -1 )
             END IF
          END IF
-         LWKOPT = MAX( 1, NW )*NB
+         LWKOPT = NW*NB
          WORK( 1 ) = LWKOPT
       END IF
 *