px4_autopilot/test/matrixAssignment.cpp

#include <matrix/math.hpp>
#include "test_macros.hpp"

using namespace matrix;

template class Matrix<float, 3, 3>;

int main()
{
    Matrix3f m;
    m.setZero();
    m(0, 0) = 1;
    m(0, 1) = 2;
    m(0, 2) = 3;
    m(1, 0) = 4;
    m(1, 1) = 5;
    m(1, 2) = 6;
    m(2, 0) = 7;
    m(2, 1) = 8;
    m(2, 2) = 9;

    float data[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
    Matrix3f m2(data);

    for(int i=0; i<9; i++) {
        TEST(fabs(data[i] - m2.data()[i]) < 1e-6f);
    }

    float data_times_2[9] = {2, 4, 6, 8, 10, 12, 14, 16, 18};
    Matrix3f m3(data_times_2);

    TEST(isEqual(m, m2));
    TEST(!(m == m3));

    m2 *= 2;
    TEST(isEqual(m2, m3));

    m2 /= 2;
    m2 -= 1;
    float data_minus_1[9] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
    TEST(isEqual(Matrix3f(data_minus_1), m2));

    m2 += 1;
    TEST(isEqual(Matrix3f(data), m2));

    m3 -= m2;

    TEST(isEqual(m3, m2));

    float data_row_02_swap[9] = {
        7, 8, 9,
        4, 5, 6,
        1, 2, 3,
    };

    float data_col_02_swap[9] = {
        3, 2, 1,
        6, 5, 4,
        9, 8, 7
    };

    Matrix3f m4(data);

    TEST(isEqual(-m4, m4*(-1)));

    // col swap
    m4.swapCols(0, 2);
    TEST(isEqual(m4, Matrix3f(data_col_02_swap)));
    m4.swapCols(0, 2);

    // row swap
    m4.swapRows(0, 2);
    TEST(isEqual(m4, Matrix3f(data_row_02_swap)));
    m4.swapRows(0, 2);

    // swapping with same row should do nothing
    m4.swapRows(0, 0);
    m4.swapRows(1, 1);
    m4.swapRows(2, 2);
    TEST(isEqual(m4, Matrix3f(data)));

    // swapping with same col should do nothing
    m4.swapCols(0, 0);
    m4.swapCols(1, 1);
    m4.swapCols(2, 2);
    TEST(isEqual(m4, Matrix3f(data)));

    TEST(fabs(m4.min() - 1) < 1e-5);
    TEST(fabs((-m4).min() + 9) < 1e-5);

    Scalar<float> s;
    s = 1;
    TEST(fabs(s - 1) < 1e-5);

    Matrix<float, 1, 1> m5 = s;
    TEST(fabs(m5(0,0) - s) < 1e-5);

    Matrix<float, 2, 2> m6;
    m6.setRow(0, Vector2f(1, 2));
    float m7_array[] = {1,2,0,0};
    Matrix<float, 2, 2> m7(m7_array);
    TEST(isEqual(m6, m7));
    m6.setCol(0, Vector2f(3, 4));
    float m8_array[] = {3,2,4,0};
    Matrix<float, 2, 2> m8(m8_array);
    TEST(isEqual(m6, m8));

    return 0;
}

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