SSCAL(3)        BLAS routine of NEC Numeric Library Collection        SSCAL(3)



NAME
       SSCAL - BLAS level one, Scales a real vector

SYNOPSIS
       SUBROUTINE SSCAL    ( n, alpha, x, incx )

           INTEGER           n, incx

           REAL              alpha, x


DESCRIPTION
       SSCAL scales a real vector with a real scalar.  SSCAL scales the vector
       x of length n and increment incx by the constant a.

       Ths routine performs the following vector operation:

                 x <-- alpha x

       where alpha is a real scalar, and x is a real
       vector.

ARGUMENTS
       n       INTEGER. (input)
               Number of elements in the vector.
               If n <= 0, this routine returns without computation.

       alpha   REAL scalar alpha. (input)

       x       REAL, (input and output)
               Array of dimension (n-1) * |incx| + 1. Vector to be scaled.

       incx    INTEGER. (input)
               Increment between elements of x.
               If incx = 0, the results will be unpredictable.

NOTES
       This routine is Level 1  Basic  Linear  Algebra  Subprograms  (Level  1
       BLAS).

       When  working  backward  (incx < 0 or incy < 0), each routine starts at
       the end of the vector and moves backward, as follows:

            x(1-incx * (n-1)), x(1-incx * (n-2)), ..., x(1)



BLAS routine                                                          SSCAL(3)