--- rpl/lapack/blas/zswap.f	2010/12/21 13:51:27	1.6
+++ rpl/lapack/blas/zswap.f	2011/07/22 07:38:03	1.7
@@ -24,29 +24,30 @@
       INTEGER I,IX,IY
 *     ..
       IF (N.LE.0) RETURN
-      IF (INCX.EQ.1 .AND. INCY.EQ.1) GO TO 20
+      IF (INCX.EQ.1 .AND. INCY.EQ.1) THEN
+*
+*       code for both increments equal to 1
+         DO I = 1,N
+            ZTEMP = ZX(I)
+            ZX(I) = ZY(I)
+            ZY(I) = ZTEMP
+         END DO
+      ELSE
 *
 *       code for unequal increments or equal increments not equal
 *         to 1
 *
-      IX = 1
-      IY = 1
-      IF (INCX.LT.0) IX = (-N+1)*INCX + 1
-      IF (INCY.LT.0) IY = (-N+1)*INCY + 1
-      DO 10 I = 1,N
-          ZTEMP = ZX(IX)
-          ZX(IX) = ZY(IY)
-          ZY(IY) = ZTEMP
-          IX = IX + INCX
-          IY = IY + INCY
-   10 CONTINUE
-      RETURN
-*
-*       code for both increments equal to 1
-   20 DO 30 I = 1,N
-          ZTEMP = ZX(I)
-          ZX(I) = ZY(I)
-          ZY(I) = ZTEMP
-   30 CONTINUE
+         IX = 1
+         IY = 1
+         IF (INCX.LT.0) IX = (-N+1)*INCX + 1
+         IF (INCY.LT.0) IY = (-N+1)*INCY + 1
+         DO I = 1,N
+            ZTEMP = ZX(IX)
+            ZX(IX) = ZY(IY)
+            ZY(IY) = ZTEMP
+            IX = IX + INCX
+            IY = IY + INCY
+         END DO
+      END IF
       RETURN
       END