/// <summary>
/// Multiplies a complex column vector by a complex constant.
/// </summary>
/// <param name="alpha">The complex constant.</param>
/// <param name="v">The complex column vector.</param>
/// <returns>The product αv.</returns>
/// <exception cref="ArgumentNullException"><paramref name="v"/> is null.</exception>
public static ComplexColumnVector operator *(Complex alpha, ComplexColumnVector v)
{
if (v == null)
{
throw new ArgumentNullException(nameof(v));
}
Complex[] product = new Complex[v.dimension];
Blas1.zAxpy(alpha, v.store, v.offset, 1, product, 0, 1, v.dimension);
return(new ComplexColumnVector(product, 0, v.dimension, false));
}