Man page - swap(3)

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Manual

swap(3) LAPACK swap(3)

swap - swap: x <=> y


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

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(*)

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(*)

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(*)

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(*)

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