scal(3F)

NAME
     SSCAL, DSCAL, CSSCAL, ZDSCAL, CSCAL, ZSCAL - Scales a real or complex
     vector

SYNOPSIS
     Real

        CALL SSCAL (n, alpha, x, incx)

     Double precision

        CALL DSCAL (n, alpha, x, incx)

     Complex

        CALL CSSCAL (n, alpha, x, incx)

        CALL CSCAL (n, alpha, x, incx)

     Double complex

        CALL ZDSCAL (n, alpha, x, incx)

        CALL ZSCAL (n, alpha, x, incx)

IMPLEMENTATION
     IRIX systems

DESCRIPTION
     SSCAL/DSCAL scales a real vector with a real scalar.

     CSSCAL/ZDSCAL scales a complex vector with a real scalar.

     CSCAL/ZSCAL scales a complex vector with a complex scalar.

     These routines perform the following vector operation:

          x <- alpha x

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

     These routines have the following arguments:

     n         Integer.  (input)
               Number of elements in the vector.  If n <= 0, these routines
               return without any computation.

     alpha     Scalar alpha. (input)
               SSCAL, CSSCAL: Real.
               DSCAL, ZDSCAL: Double precision.
               CSCAL: Complex.
               ZSCAL: Double complex.

     x         Array of dimension (n-1) * |incx| + 1.  (input and output)
               SSCAL: Real array.
               DSCAL: Double precision array.
               CSSCAL, CSCAL: Complex array.
               ZDSCAL, ZSCAL: Double complex array.
               Vector to be scaled.

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

NOTES
     These routines are Level 1 Basic Linear Algebra Subprograms (Level 1
     BLAS).

     When working backward (incx < 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)

SEE ALSO
     This man page is available only online.