swap(3)

Library Functions Manual

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 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(*)
!>

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 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(*)
!>

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 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(*)
!>

Definition at line 81 of file sswap.f.

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(*)
!>

Definition at line 80 of file zswap.f.

Author

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