NAME

swap - swap: x <=> y

SYNOPSIS

Functions

subroutine cswap (n, cx, incx, cy, incy)
CSWAP subroutine dswap (n, dx, incx, dy, incy)
DSWAP subroutine sswap (n, sx, incx, sy, incy)
SSWAP subroutine zswap (n, zx, incx, zy, incy)
ZSWAP

Detailed Description

Function Documentation

subroutine cswap (integer n, complex, dimension() cx, integer incx, complex, dimension() cy, integer incy)

CSWAP

Purpose:

   CSWAP interchanges two vectors.

Parameters

          N is INTEGER
         number of elements in input vector(s)

          CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

          INCX is INTEGER
         storage spacing between elements of CX

          CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY

          INCY is INTEGER
         storage spacing between elements of CY

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

     jack dongarra, linpack, 3/11/78.
     modified 12/3/93, array(1) declarations changed to array(*)

subroutine dswap (integer n, double precision, dimension() dx, integer incx, double precision, dimension() dy, integer incy)

DSWAP

Purpose:

    DSWAP interchanges two vectors.
    uses unrolled loops for increments equal to 1.

Parameters

          N is INTEGER
         number of elements in input vector(s)

          DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

          INCX is INTEGER
         storage spacing between elements of DX

          DY is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY

          INCY is INTEGER
         storage spacing between elements of DY

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

     jack dongarra, linpack, 3/11/78.
     modified 12/3/93, array(1) declarations changed to array(*)

subroutine sswap (integer n, real, dimension() sx, integer incx, real, dimension() sy, integer incy)

SSWAP

Purpose:

    SSWAP interchanges two vectors.
    uses unrolled loops for increments equal to 1.

Parameters

          N is INTEGER
         number of elements in input vector(s)

          SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

          INCX is INTEGER
         storage spacing between elements of SX

          SY is REAL array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY

          INCY is INTEGER
         storage spacing between elements of SY

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

     jack dongarra, linpack, 3/11/78.
     modified 12/3/93, array(1) declarations changed to array(*)

subroutine zswap (integer n, complex16, dimension() zx, integer incx, complex16, dimension() zy, integer incy)

ZSWAP

Purpose:

    ZSWAP interchanges two vectors.

Parameters

          N is INTEGER
         number of elements in input vector(s)

          ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

          INCX is INTEGER
         storage spacing between elements of ZX

          ZY is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY

          INCY is INTEGER
         storage spacing between elements of ZY

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

     jack dongarra, 3/11/78.
     modified 12/3/93, array(1) declarations changed to array(*)

Author

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