rpl/lapack/blas/drot.f - diff

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Diff for /rpl/lapack/blas/drot.f between versions 1.2 and 1.11

-version 1.2, 2010/04/21 13:45:09
+version 1.11, 2014/01/27 09:28:12
  Line 1
+ *> \brief \b DROT
+ *
+ *  =========== DOCUMENTATION ===========
+ *
+ * Online html documentation available at
+ *            http://www.netlib.org/lapack/explore-html/
+ *
+ *  Definition:
+ *  ===========
+ *
+ *       SUBROUTINE DROT(N,DX,INCX,DY,INCY,C,S)
+ *
+ *       .. Scalar Arguments ..
+ *       DOUBLE PRECISION C,S
+ *       INTEGER INCX,INCY,N
+ *       ..
+ *       .. Array Arguments ..
+ *       DOUBLE PRECISION DX(*),DY(*)
+ *       ..
+ *
+ *
+ *> \par Purpose:
+ *  =============
+ *>
+ *> \verbatim
+ *>
+ *>    DROT applies a plane rotation.
+ *> \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 DROT(N,DX,INCX,DY,INCY,C,S)
+ *
+ *  -- 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 C,S
        INTEGER INCX,INCY,N
- Line 7
+ Line 64
        DOUBLE PRECISION DX(*),DY(*)
  *     ..
  *
- *  Purpose
- *  =======
- *
- *     DROT applies a plane rotation.
- *
- *  Further Details
- *  ===============
- *
- *     jack dongarra, linpack, 3/11/78.
- *     modified 12/3/93, array(1) declarations changed to array(*)
- *
  *  =====================================================================
  *
  *     .. Local Scalars ..
- Line 25
+ Line 71
        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
+ *       code for both increments equal to 1
- *         to 1
  *
-       IX = 1
+          DO I = 1,N
-       IY = 1
+             DTEMP = C*DX(I) + S*DY(I)
-       IF (INCX.LT.0) IX = (-N+1)*INCX + 1
+             DY(I) = C*DY(I) - S*DX(I)
-       IF (INCY.LT.0) IY = (-N+1)*INCY + 1
+             DX(I) = DTEMP
-       DO 10 I = 1,N
+          END DO
-           DTEMP = C*DX(IX) + S*DY(IY)
+       ELSE
-           DY(IY) = C*DY(IY) - S*DX(IX)
-           DX(IX) = DTEMP
-           IX = IX + INCX
-           IY = IY + INCY
-CONTINUE
-       RETURN
  *
- *       code for both increments equal to 1
+ *       code for unequal increments or equal increments not equal
+ *         to 1
  *
-DO 30 I = 1,N
+          IX = 1
-           DTEMP = C*DX(I) + S*DY(I)
+          IY = 1
-           DY(I) = C*DY(I) - S*DX(I)
+          IF (INCX.LT.0) IX = (-N+1)*INCX + 1
-           DX(I) = DTEMP
+          IF (INCY.LT.0) IY = (-N+1)*INCY + 1
-CONTINUE
+          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

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