Declare DZASUM as EXTERNAL

Author: martin-frbg

lapack-netlib/TESTING/EIG/zbdt05.f

@@ -158,9 +158,8 @@ SUBROUTINE ZBDT05( M, N, A, LDA, S, NS, U, LDU,
 *     .. External Functions ..
       LOGICAL            LSAME
       INTEGER            IDAMAX
-      DOUBLE PRECISION   DASUM, DLAMCH, ZLANGE
-      EXTERNAL           LSAME, IDAMAX, DASUM, DLAMCH, ZLANGE
-      DOUBLE PRECISION   DZASUM
+      DOUBLE PRECISION   DASUM, DZASUM, DLAMCH, ZLANGE
+      EXTERNAL           LSAME, IDAMAX, DASUM, DZASUM, DLAMCH, ZLANGE
 *     ..
 *     .. External Subroutines ..
       EXTERNAL           ZGEMM