Method perform_test

dlib/test/sparse_vector.cpp:157–293

        void perform_test (
        )
        {
            test_make_sparse_vector_inplace();

            std::map<unsigned int, double> v;
            v[4] = 8;
            v[2] = -4;
            v[9] = 10;

            DLIB_TEST(max(v) == 10);
            DLIB_TEST(min(v) == -4);

            v.clear();
            v[4] = 8;
            v[9] = 10;
            DLIB_TEST(max(v) == 10);
            DLIB_TEST(min(v) == 0);


            v.clear();
            v[4] = -9;
            v[9] = -4;
            DLIB_TEST(max(v) == 0);
            DLIB_TEST(min(v) == -9);


            {
                matrix<double> a(2,2), b(2,2);
                a = randm(2,2);
                b = randm(2,2);

                DLIB_TEST(equal(a-b, subtract(a,b)));
                DLIB_TEST(equal(a+b, add(a,b)));
                DLIB_TEST(equal(a-(b+b), subtract(a,b+b)));
                DLIB_TEST(equal(a+b+b, add(a,b+b)));
            }

            {
                std::map<unsigned long,double> a, b, c;
                a[1] = 2;
                a[3] = 5;

                b[0] = 3;
                b[1] = 1;

                c = add(a,b);
                DLIB_TEST(c.size() == 3);
                DLIB_TEST(c[0] == 3);
                DLIB_TEST(c[1] == 3);
                DLIB_TEST(c[3] == 5);

                c = subtract(a,b);
                DLIB_TEST(c.size() == 3);
                DLIB_TEST(c[0] == -3);
                DLIB_TEST(c[1] == 1);
                DLIB_TEST(c[3] == 5);