rpl/lapack/blas/dscal.f - diff

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Diff for /rpl/lapack/blas/dscal.f between versions 1.6 and 1.13

-version 1.6, 2010/12/21 13:51:25
+version 1.13, 2017/06/17 10:53:43
  Line 1
+ *> \brief \b DSCAL
+ *
+ *  =========== DOCUMENTATION ===========
+ *
+ * Online html documentation available at
+ *            http://www.netlib.org/lapack/explore-html/
+ *
+ *  Definition:
+ *  ===========
+ *
+ *       SUBROUTINE DSCAL(N,DA,DX,INCX)
+ *
+ *       .. Scalar Arguments ..
+ *       DOUBLE PRECISION DA
+ *       INTEGER INCX,N
+ *       ..
+ *       .. Array Arguments ..
+ *       DOUBLE PRECISION DX(*)
+ *       ..
+ *
+ *
+ *> \par Purpose:
+ *  =============
+ *>
+ *> \verbatim
+ *>
+ *>    DSCAL scales a vector by a constant.
+ *>    uses unrolled loops for increment equal to one.
+ *> \endverbatim
+ *
+ *  Authors:
+ *  ========
+ *
+ *> \author Univ. of Tennessee
+ *> \author Univ. of California Berkeley
+ *> \author Univ. of Colorado Denver
+ *> \author NAG Ltd.
+ *
+ *> \date December 2016
+ *
+ *> \ingroup double_blas_level1
+ *
+ *> \par Further Details:
+ *  =====================
+ *>
+ *> \verbatim
+ *>
+ *>     jack dongarra, linpack, 3/11/78.
+ *>     modified 3/93 to return if incx .le. 0.
+ *>     modified 12/3/93, array(1) declarations changed to array(*)
+ *> \endverbatim
+ *>
+ *  =====================================================================
        SUBROUTINE DSCAL(N,DA,DX,INCX)
+ *
+ *  -- Reference BLAS level1 routine (version 3.7.0) --
+ *  -- Reference BLAS is a software package provided by Univ. of Tennessee,    --
+ *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+ *     December 2016
+ *
  *     .. Scalar Arguments ..
        DOUBLE PRECISION DA
        INTEGER INCX,N
- Line 7
+ Line 66
        DOUBLE PRECISION DX(*)
  *     ..
  *
- *  Purpose
- *  =======
- *
- *     DSCAL scales a vector by a constant.
- *     uses unrolled loops for increment equal to one.
- *
- *  Further Details
- *  ===============
- *
- *     jack dongarra, linpack, 3/11/78.
- *     modified 3/93 to return if incx .le. 0.
- *     modified 12/3/93, array(1) declarations changed to array(*)
- *
  *  =====================================================================
  *
  *     .. Local Scalars ..
- Line 29
+ Line 75
        INTRINSIC MOD
  *     ..
        IF (N.LE.0 .OR. INCX.LE.0) RETURN
-       IF (INCX.EQ.1) GO TO 20
+       IF (INCX.EQ.1) THEN
- *
- *        code for increment not equal to 1
- *
-       NINCX = N*INCX
-       DO 10 I = 1,NINCX,INCX
-           DX(I) = DA*DX(I)
-CONTINUE
-       RETURN
  *
  *        code for increment equal to 1
  *
  *
  *        clean-up loop
  *
-M = MOD(N,5)
+          M = MOD(N,5)
-       IF (M.EQ.0) GO TO 40
+          IF (M.NE.0) THEN
-       DO 30 I = 1,M
+             DO I = 1,M
-           DX(I) = DA*DX(I)
+                DX(I) = DA*DX(I)
-CONTINUE
+             END DO
-       IF (N.LT.5) RETURN
+             IF (N.LT.5) RETURN
-MP1 = M + 1
+          END IF
-       DO 50 I = MP1,N,5
+          MP1 = M + 1
-           DX(I) = DA*DX(I)
+          DO I = MP1,N,5
-           DX(I+1) = DA*DX(I+1)
+             DX(I) = DA*DX(I)
-           DX(I+2) = DA*DX(I+2)
+             DX(I+1) = DA*DX(I+1)
-           DX(I+3) = DA*DX(I+3)
+             DX(I+2) = DA*DX(I+2)
-           DX(I+4) = DA*DX(I+4)
+             DX(I+3) = DA*DX(I+3)
-CONTINUE
+             DX(I+4) = DA*DX(I+4)
+          END DO
+       ELSE
+ *
+ *        code for increment not equal to 1
+ *
+          NINCX = N*INCX
+          DO I = 1,NINCX,INCX
+             DX(I) = DA*DX(I)
+          END DO
+       END IF
        RETURN
        END

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