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

           !>          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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LAPACK                          Version 3.12.0                         swap(3)