--- rpl/lapack/blas/drot.f	2010/12/21 13:51:25	1.6
+++ rpl/lapack/blas/drot.f	2011/07/22 07:38:01	1.7
@@ -25,30 +25,31 @@
       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 unequal increments or equal increments not equal
-*         to 1
+*       code for both increments 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 = C*DX(IX) + S*DY(IY)
-          DY(IY) = C*DY(IY) - S*DX(IX)
-          DX(IX) = DTEMP
-          IX = IX + INCX
-          IY = IY + INCY
-   10 CONTINUE
-      RETURN
+         DO I = 1,N
+            DTEMP = C*DX(I) + S*DY(I)
+            DY(I) = C*DY(I) - S*DX(I)
+            DX(I) = DTEMP
+         END DO
+      ELSE
 *
-*       code for both increments equal to 1
+*       code for unequal increments or equal increments not equal
+*         to 1
 *
-   20 DO 30 I = 1,N
-          DTEMP = C*DX(I) + S*DY(I)
-          DY(I) = C*DY(I) - S*DX(I)
-          DX(I) = DTEMP
-   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
+            DTEMP = C*DX(IX) + S*DY(IY)
+            DY(IY) = C*DY(IY) - S*DX(IX)
+            DX(IX) = DTEMP
+            IX = IX + INCX
+            IY = IY + INCY
+         END DO
+      END IF
       RETURN
       END