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swap(3) 			     LAPACK				 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, di-
     mension(*) 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,  com-
     plex*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
     Generated automatically by Doxygen for LAPACK from the source code.

Version 3.12.1		    Sun Jan 12 2025 15:13:38			 swap(3)

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