--- rpl/lapack/lapack/zunmqr.f	2018/05/29 07:18:42	1.19
+++ rpl/lapack/lapack/zunmqr.f	2023/08/07 08:39:44	1.20
@@ -159,18 +159,15 @@
 *> \author Univ. of Colorado Denver
 *> \author NAG Ltd.
 *
-*> \date December 2016
-*
 *> \ingroup complex16OTHERcomputational
 *
 *  =====================================================================
       SUBROUTINE ZUNMQR( SIDE, TRANS, M, N, K, 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
@@ -216,10 +213,10 @@
 *
       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
@@ -235,7 +232,7 @@
          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
 *
@@ -245,7 +242,7 @@
 *
          NB = MIN( NBMAX, ILAENV( 1, 'ZUNMQR', SIDE // TRANS, M, N, K,
      $        -1 ) )
-         LWKOPT = MAX( 1, NW )*NB + TSIZE
+         LWKOPT = NW*NB + TSIZE
          WORK( 1 ) = LWKOPT
       END IF
 *
@@ -266,7 +263,7 @@
       NBMIN = 2
       LDWORK = NW
       IF( NB.GT.1 .AND. NB.LT.K ) THEN
-         IF( LWORK.LT.NW*NB+TSIZE ) THEN
+         IF( LWORK.LT.LWKOPT ) THEN
             NB = (LWORK-TSIZE) / LDWORK
             NBMIN = MAX( 2, ILAENV( 2, 'ZUNMQR', SIDE // TRANS, M, N, K,
      $              -1 ) )