rpl/lapack/blas/zswap.f - diff

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Diff for /rpl/lapack/blas/zswap.f between versions 1.2 and 1.15

-version 1.2, 2010/04/21 13:45:11
+version 1.15, 2018/05/29 07:19:43
  Line 1
+ *> \brief \b ZSWAP
+ *
+ *  =========== DOCUMENTATION ===========
+ *
+ * Online html documentation available at
+ *            http://www.netlib.org/lapack/explore-html/
+ *
+ *  Definition:
+ *  ===========
+ *
+ *       SUBROUTINE ZSWAP(N,ZX,INCX,ZY,INCY)
+ *
+ *       .. Scalar Arguments ..
+ *       INTEGER INCX,INCY,N
+ *       ..
+ *       .. Array Arguments ..
+ *       COMPLEX*16 ZX(*),ZY(*)
+ *       ..
+ *
+ *
+ *> \par Purpose:
+ *  =============
+ *>
+ *> \verbatim
+ *>
+ *>    ZSWAP interchanges two vectors.
+ *> \endverbatim
+ *
+ *  Arguments:
+ *  ==========
+ *
+ *> \param[in] N
+ *> \verbatim
+ *>          N is INTEGER
+ *>         number of elements in input vector(s)
+ *> \endverbatim
+ *>
+ *> \param[in,out] ZX
+ *> \verbatim
+ *>          ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
+ *> \endverbatim
+ *>
+ *> \param[in] INCX
+ *> \verbatim
+ *>          INCX is INTEGER
+ *>         storage spacing between elements of ZX
+ *> \endverbatim
+ *>
+ *> \param[in,out] ZY
+ *> \verbatim
+ *>          ZY is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCY ) )
+ *> \endverbatim
+ *>
+ *> \param[in] INCY
+ *> \verbatim
+ *>          INCY is INTEGER
+ *>         storage spacing between elements of ZY
+ *> \endverbatim
+ *
+ *  Authors:
+ *  ========
+ *
+ *> \author Univ. of Tennessee
+ *> \author Univ. of California Berkeley
+ *> \author Univ. of Colorado Denver
+ *> \author NAG Ltd.
+ *
+ *> \date November 2017
+ *
+ *> \ingroup complex16_blas_level1
+ *
+ *> \par Further Details:
+ *  =====================
+ *>
+ *> \verbatim
+ *>
+ *>     jack dongarra, 3/11/78.
+ *>     modified 12/3/93, array(1) declarations changed to array(*)
+ *> \endverbatim
+ *>
+ *  =====================================================================
        SUBROUTINE ZSWAP(N,ZX,INCX,ZY,INCY)
+ *
+ *  -- Reference BLAS level1 routine (version 3.8.0) --
+ *  -- Reference BLAS is a software package provided by Univ. of Tennessee,    --
+ *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+ *     November 2017
+ *
  *     .. Scalar Arguments ..
        INTEGER INCX,INCY,N
  *     ..
  *     .. Array Arguments ..
-       DOUBLE COMPLEX ZX(*),ZY(*)
+       COMPLEX*16 ZX(*),ZY(*)
  *     ..
  *
- *  Purpose
- *  =======
- *
- *     ZSWAP interchanges two vectors.
- *
- *  Further Details
- *  ===============
- *
- *     jack dongarra, 3/11/78.
- *     modified 12/3/93, array(1) declarations changed to array(*)
- *
  *  =====================================================================
  *
  *     .. Local Scalars ..
-       DOUBLE COMPLEX ZTEMP
+       COMPLEX*16 ZTEMP
        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 both increments equal to 1
+          DO I = 1,N
+             ZTEMP = ZX(I)
+             ZX(I) = ZY(I)
+             ZY(I) = ZTEMP
+          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
-           ZTEMP = ZX(IX)
+             ZTEMP = ZX(IX)
-           ZX(IX) = ZY(IY)
+             ZX(IX) = ZY(IY)
-           ZY(IY) = ZTEMP
+             ZY(IY) = ZTEMP
-           IX = IX + INCX
+             IX = IX + INCX
-           IY = IY + INCY
+             IY = IY + INCY
-CONTINUE
+          END DO
-       RETURN
+       END IF
- *
- *       code for both increments equal to 1
-DO 30 I = 1,N
-           ZTEMP = ZX(I)
-           ZX(I) = ZY(I)
-           ZY(I) = ZTEMP
-CONTINUE
        RETURN
        END

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