Method transposeMultiply

JSAT/src/jsat/linear/DenseMatrix.java:117–135

(double c, Vec b, Vec x)

    }
    
    @Override
    public void transposeMultiply(double c, Vec b, Vec x)
    {
        if(this.rows() != b.length())
            throw new ArithmeticException("Matrix dimensions do not agree, [" + cols() +"," + rows() + "] x [" + b.length() + ",1]" );
        else if(this.cols() != x.length())
            throw new ArithmeticException("Matrix dimensions do not agree with target vector");
        
        for(int i = 0; i < rows(); i++)//if b was sparce, we want to skip every time b_i = 0
        {
            double b_i = b.get(i);
            if(b_i == 0)//Skip, not quite as good as sparce handeling
                continue;//TODO handle sparce input vector better
            
            double[] A_i = this.matrix[i];
            for(int j = 0; j < cols(); j++)
                x.increment(j, c*b_i*A_i[j]);
        }
    }
    @SuppressWarnings("unused")
    private Matrix blockMultiply(Matrix b)
    {