Method setAlpha

src/tests/include/BlasBase.h:130–134

    bool useAlpha() const        { return useAlpha_; }
    ComplexLong alpha() const   { return alpha_; }
    void setAlpha(ComplexLong alpha)
    {
        alpha_ = alpha;
        useAlpha_ = true;
    }

    bool useBeta() const         { return useBeta_; }
    ComplexLong beta() const    { return beta_; }