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Diff for /rpl/lapack/blas/daxpy.f between versions 1.2 and 1.8

-version 1.2, 2010/04/21 13:45:09
+version 1.8, 2011/11/21 20:37:07
  Line 1
+ *> \brief \b DAXPY
+ *
+ *  =========== DOCUMENTATION ===========
+ *
+ * Online html documentation available at
+ *            http://www.netlib.org/lapack/explore-html/
+ *
+ *  Definition:
+ *  ===========
+ *
+ *       SUBROUTINE DAXPY(N,DA,DX,INCX,DY,INCY)
+ *
+ *       .. Scalar Arguments ..
+ *       DOUBLE PRECISION DA
+ *       INTEGER INCX,INCY,N
+ *       ..
+ *       .. Array Arguments ..
+ *       DOUBLE PRECISION DX(*),DY(*)
+ *       ..
+ *
+ *
+ *> \par Purpose:
+ *  =============
+ *>
+ *> \verbatim
+ *>
+ *>    DAXPY constant times a vector plus a vector.
+ *>    uses unrolled loops for increments equal to one.
+ *> \endverbatim
+ *
+ *  Authors:
+ *  ========
+ *
+ *> \author Univ. of Tennessee
+ *> \author Univ. of California Berkeley
+ *> \author Univ. of Colorado Denver
+ *> \author NAG Ltd.
+ *
+ *> \date November 2011
+ *
+ *> \ingroup double_blas_level1
+ *
+ *> \par Further Details:
+ *  =====================
+ *>
+ *> \verbatim
+ *>
+ *>     jack dongarra, linpack, 3/11/78.
+ *>     modified 12/3/93, array(1) declarations changed to array(*)
+ *> \endverbatim
+ *>
+ *  =====================================================================
        SUBROUTINE DAXPY(N,DA,DX,INCX,DY,INCY)
+ *
+ *  -- Reference BLAS level1 routine (version 3.4.0) --
+ *  -- Reference BLAS is a software package provided by Univ. of Tennessee,    --
+ *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+ *     November 2011
+ *
  *     .. Scalar Arguments ..
        DOUBLE PRECISION DA
        INTEGER INCX,INCY,N
- Line 7
+ Line 65
        DOUBLE PRECISION DX(*),DY(*)
  *     ..
  *
- *  Purpose
- *  =======
- *
- *     DAXPY constant times a vector plus a vector.
- *     uses unrolled loops for increments equal to one.
- *
- *  Further Details
- *  ===============
- *
- *     jack dongarra, linpack, 3/11/78.
- *     modified 12/3/93, array(1) declarations changed to array(*)
- *
  *  =====================================================================
  *
  *     .. Local Scalars ..
- Line 29
+ Line 75
  *     ..
        IF (N.LE.0) RETURN
        IF (DA.EQ.0.0d0) 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
+ *
+ *
+ *        clean-up loop
+ *
+          M = MOD(N,4)
+          IF (M.NE.0) THEN
+             DO I = 1,M
+                DY(I) = DY(I) + DA*DX(I)
+             END DO
+          END IF
+          IF (N.LT.4) RETURN
+          MP1 = M + 1
+          DO I = MP1,N,4
+             DY(I) = DY(I) + DA*DX(I)
+             DY(I+1) = DY(I+1) + DA*DX(I+1)
+             DY(I+2) = DY(I+2) + DA*DX(I+2)
+             DY(I+3) = DY(I+3) + DA*DX(I+3)
+          END DO
+       ELSE
  *
  *        code for unequal increments or equal increments
  *          not equal to 1
  *
-       IX = 1
+          IX = 1
-       IY = 1
+          IY = 1
-       IF (INCX.LT.0) IX = (-N+1)*INCX + 1
+          IF (INCX.LT.0) IX = (-N+1)*INCX + 1
-       IF (INCY.LT.0) IY = (-N+1)*INCY + 1
+          IF (INCY.LT.0) IY = (-N+1)*INCY + 1
-       DO 10 I = 1,N
+          DO I = 1,N
            DY(IY) = DY(IY) + DA*DX(IX)
            IX = IX + INCX
            IY = IY + INCY
-CONTINUE
+          END DO
-       RETURN
+       END IF
- *
- *        code for both increments equal to 1
- *
- *
- *        clean-up loop
- *
-M = MOD(N,4)
-       IF (M.EQ.0) GO TO 40
-       DO 30 I = 1,M
-           DY(I) = DY(I) + DA*DX(I)
-CONTINUE
-       IF (N.LT.4) RETURN
-MP1 = M + 1
-       DO 50 I = MP1,N,4
-           DY(I) = DY(I) + DA*DX(I)
-           DY(I+1) = DY(I+1) + DA*DX(I+1)
-           DY(I+2) = DY(I+2) + DA*DX(I+2)
-           DY(I+3) = DY(I+3) + DA*DX(I+3)
-CONTINUE
        RETURN
        END

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