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HPL_dscal(3)                 HPL Library Functions                HPL_dscal(3)

NAME
       HPL_dscal - x = alpha * x.

SYNOPSIS
       #include "hpl.h"

       void HPL_dscal( const int N, const double ALPHA, double * X, const int
       INCX );

DESCRIPTION
       HPL_dscal scales the vector x by alpha.

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

       ALPHA   (local input)           const double
               On entry, ALPHA specifies the scalar alpha.   When  ALPHA  is
               supplied as zero, then the entries of the incremented array X
               need not be set on input.

       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  scaled by
               the scalar alpha.

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

EXAMPLE
       #include "hpl.h"

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

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

HPL 2.1                        October 26, 2012                   HPL_dscal(3)