Method testMultiply

JSAT/test/jsat/linear/SparseVectorTest.java:342–377

Test of multiply method, of class SparseVector.

()

     * Test of multiply method, of class SparseVector.
     */
    @Test
    public void testMultiply()
    {
        System.out.println("multiply");
        double c = 0.5;
        Matrix A = Matrix.pascal(20);
        Vec b = new DenseVector(20);
        
        x.multiply(c, A, b);
        
        DenseVector truth = new DenseVector(new double[]
        {
            9.50000000000000e+00,
            1.17000000000000e+02,
            1.02400000000000e+03,
            6.79100000000000e+03,
            3.65035000000000e+04,
            1.66677000000000e+05,
            6.67777000000000e+05,
            2.40242100000000e+06,
            7.89524000000000e+06,
            2.40138700000000e+07,
            6.82963280000000e+07,
            1.83124137000000e+08,
            4.66043078500000e+08,
            1.13203426200000e+09,
            2.63681749700000e+09,
            5.91310906500000e+09,
            1.28100303500000e+10,
            2.68885048480000e+10,
            5.48258186510000e+10,
            1.08840104671000e+11,
        });
        
        assertTrue(b.equals(truth, 1e-13));
    }

    /**
     * Test of mutableAdd method, of class SparseVector.