Method multiply

JSAT/src/jsat/linear/SparseMatrix.java:148–161

(Vec b, double z, Vec c)

    }

    @Override
    public void multiply(Vec b, double z, Vec c)
    {
        if(this.cols() != b.length())
            throw new ArithmeticException("Matrix dimensions do not agree, [" + rows() +"," + cols() + "] x [" + b.length() + ",1]" );
        if(this.rows() != c.length())
            throw new ArithmeticException("Target vector dimension does not agree with matrix dimensions. Matrix has " + rows() + " rows but tagert has " + c.length());
        
        for(int i = 0; i < rows(); i++)
        {
            SparseVector row = rows[i];
            c.increment(i, row.dot(b)*z);
        }
    }

    @Override
    public void multiply(Matrix B, Matrix C)