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HPL_dswap(3)		     HPL Library Functions		  HPL_dswap(3)

NAME
       HPL_dswap - y <-> x.

SYNOPSIS
       #include	"hpl.h"

       void  HPL_dswap(	 const	int N, double *	X, const int INCX, double * Y,
       const int INCY );

DESCRIPTION
       HPL_dswap swaps the vectors x and y.

ARGUMENTS
       N       (local input)	       const int
	       On entry, N specifies the length	of the vectors	x  and	 y.  N
	       must be at least	zero.

       X       (local input/output)    double *
	       On entry,  X  is	an incremented array of	dimension  at  least (
	       1 + ( n - 1 ) * abs( INCX ) )  that  contains the vector	x.  On
	       exit, the entries of the	incremented array  X  are updated with
	       the entries of the incremented array Y.

       INCX    (local input)	       const int
	       On entry, INCX specifies	the increment for the elements	of  X.
	       INCX must not be	zero.

       Y       (local input/output)    double *
	       On entry,  Y  is	an incremented array of	dimension  at  least (
	       1 + ( n - 1 ) * abs( INCY ) )  that  contains the vector	y.  On
	       exit, the entries of the	incremented array  Y  are updated with
	       the entries of the incremented array X.

       INCY    (local input)	       const int
	       On entry, INCY specifies	the increment for the elements	of  Y.
	       INCY must not be	zero.

EXAMPLE
       #include	"hpl.h"

       int main(int argc, char *argv[])
       {
	  double x[3], y[3];
	  x[0] = 1.0; x[1] = 2.0; x[2] = 3.0;
	  y[0] = 4.0; y[1] = 5.0; y[2] = 6.0;
	  HPL_dswap( 3,	x, 1, y, 1 );
	  printf("x=[%f,%f,%f]\n", x[0], x[1], x[2]);
	  printf("y=[%f,%f,%f]\n", y[0], y[1], y[2]);
	  exit(0); return(0);
       }

SEE ALSO
       HPL_daxpy (3), HPL_dcopy	(3), HPL_dscal (3).

HPL 2.1			       October 26, 2012			  HPL_dswap(3)

NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | EXAMPLE | SEE ALSO

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