swap(3)

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

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

    CX

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

    INCX

    !>          INCX is INTEGER
    !>         storage spacing between elements of CX
    !>

    CY

    !>          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(*)
    !>

Definition at line 80 of file cswap.f.

  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

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

    DX

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

    INCX

    !>          INCX is INTEGER
    !>         storage spacing between elements of DX
    !>

    DY

    !>          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(*)
    !>

Definition at line 81 of file dswap.f.

  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

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

    SX

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

    INCX

    !>          INCX is INTEGER
    !>         storage spacing between elements of SX
    !>

    SY

    !>          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(*)
    !>

Definition at line 81 of file sswap.f.

  subroutine zswap (integer n, complex*16, dimension(*) zx, integer incx, complex*16, dimension(*) zy, integer incy)

ZSWAP

Purpose:

    !>
    !>    ZSWAP interchanges two vectors.
    !>

Parameters
    N

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

    ZX

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

    INCX

    !>          INCX is INTEGER
    !>         storage spacing between elements of ZX
    !>

    ZY

    !>          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(*)
    !>

Definition at line 80 of file zswap.f.

Author

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