xBBCSD: fix uninitialized read

christoph-conrads · christoph-conrads · commit 59c161865fde · 2023-12-29T20:45:15.000+01:00
fixes Reference-LAPACK#943
diff --git a/SRC/cbbcsd.f b/SRC/cbbcsd.f
@@ -805,7 +805,7 @@ SUBROUTINE CBBCSD( JOBU1, JOBU2, JOBV1T, JOBV2T, TRANS, M, P, Q,
                CALL SLARTGP( B22BULGE, B22E(I-1), RWORK(IU2SN+I-1),
      $                       RWORK(IU2CS+I-1), R )
             ELSE IF( NU .LT. MU ) THEN
-               CALL SLARTGS( B21E(I), B21E(I+1), NU, RWORK(IU2CS+I-1),
+               CALL SLARTGS( B21E(I), B21D(I+1), NU, RWORK(IU2CS+I-1),
      $                       RWORK(IU2SN+I-1) )
             ELSE
                CALL SLARTGS( B22D(I), B22E(I), MU, RWORK(IU2CS+I-1),
diff --git a/SRC/dbbcsd.f b/SRC/dbbcsd.f
@@ -805,7 +805,7 @@ SUBROUTINE DBBCSD( JOBU1, JOBU2, JOBV1T, JOBV2T, TRANS, M, P, Q,
                CALL DLARTGP( B22BULGE, B22E(I-1), WORK(IU2SN+I-1),
      $                       WORK(IU2CS+I-1), R )
             ELSE IF( NU .LT. MU ) THEN
-               CALL DLARTGS( B21E(I), B21E(I+1), NU, WORK(IU2CS+I-1),
+               CALL DLARTGS( B21E(I), B21D(I+1), NU, WORK(IU2CS+I-1),
      $                       WORK(IU2SN+I-1) )
             ELSE
                CALL DLARTGS( B22D(I), B22E(I), MU, WORK(IU2CS+I-1),
diff --git a/SRC/sbbcsd.f b/SRC/sbbcsd.f
@@ -805,7 +805,7 @@ SUBROUTINE SBBCSD( JOBU1, JOBU2, JOBV1T, JOBV2T, TRANS, M, P, Q,
                CALL SLARTGP( B22BULGE, B22E(I-1), WORK(IU2SN+I-1),
      $                       WORK(IU2CS+I-1), R )
             ELSE IF( NU .LT. MU ) THEN
-               CALL SLARTGS( B21E(I), B21E(I+1), NU, WORK(IU2CS+I-1),
+               CALL SLARTGS( B21E(I), B21D(I+1), NU, WORK(IU2CS+I-1),
      $                       WORK(IU2SN+I-1) )
             ELSE
                CALL SLARTGS( B22D(I), B22E(I), MU, WORK(IU2CS+I-1),
diff --git a/SRC/zbbcsd.f b/SRC/zbbcsd.f
@@ -804,7 +804,7 @@ SUBROUTINE ZBBCSD( JOBU1, JOBU2, JOBV1T, JOBV2T, TRANS, M, P, Q,
                CALL DLARTGP( B22BULGE, B22E(I-1), RWORK(IU2SN+I-1),
      $                       RWORK(IU2CS+I-1), R )
             ELSE IF( NU .LT. MU ) THEN
-               CALL DLARTGS( B21E(I), B21E(I+1), NU, RWORK(IU2CS+I-1),
+               CALL DLARTGS( B21E(I), B21D(I+1), NU, RWORK(IU2CS+I-1),
      $                       RWORK(IU2SN+I-1) )
             ELSE
                CALL DLARTGS( B22D(I), B22E(I), MU, RWORK(IU2CS+I-1),
