--- rpl/lapack/blas/dswap.f	2010/12/21 13:51:25	1.6
+++ rpl/lapack/blas/dswap.f	2011/07/22 07:38:01	1.7
@@ -28,48 +28,50 @@
       INTRINSIC MOD
 *     ..
       IF (N.LE.0) RETURN
-      IF (INCX.EQ.1 .AND. INCY.EQ.1) GO TO 20
-*
-*       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
-          DTEMP = DX(IX)
-          DX(IX) = DY(IY)
-          DY(IY) = DTEMP
-          IX = IX + INCX
-          IY = IY + INCY
-   10 CONTINUE
-      RETURN
+      IF (INCX.EQ.1 .AND. INCY.EQ.1) THEN
 *
 *       code for both increments equal to 1
 *
 *
 *       clean-up loop
 *
-   20 M = MOD(N,3)
-      IF (M.EQ.0) GO TO 40
-      DO 30 I = 1,M
-          DTEMP = DX(I)
-          DX(I) = DY(I)
-          DY(I) = DTEMP
-   30 CONTINUE
-      IF (N.LT.3) RETURN
-   40 MP1 = M + 1
-      DO 50 I = MP1,N,3
-          DTEMP = DX(I)
-          DX(I) = DY(I)
-          DY(I) = DTEMP
-          DTEMP = DX(I+1)
-          DX(I+1) = DY(I+1)
-          DY(I+1) = DTEMP
-          DTEMP = DX(I+2)
-          DX(I+2) = DY(I+2)
-          DY(I+2) = DTEMP
-   50 CONTINUE
+         M = MOD(N,3)
+         IF (M.NE.0) THEN
+            DO I = 1,M
+               DTEMP = DX(I)
+               DX(I) = DY(I)
+               DY(I) = DTEMP
+            END DO
+            IF (N.LT.3) RETURN
+         END IF
+         MP1 = M + 1
+         DO I = MP1,N,3
+            DTEMP = DX(I)
+            DX(I) = DY(I)
+            DY(I) = DTEMP
+            DTEMP = DX(I+1)
+            DX(I+1) = DY(I+1)
+            DY(I+1) = DTEMP
+            DTEMP = DX(I+2)
+            DX(I+2) = DY(I+2)
+            DY(I+2) = DTEMP
+         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 I = 1,N
+            DTEMP = DX(IX)
+            DX(IX) = DY(IY)
+            DY(IY) = DTEMP
+            IX = IX + INCX
+            IY = IY + INCY
+         END DO
+      END IF
       RETURN
       END