matrixMult.cpp

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

using namespace matrix;

int main()
{
    float data[9] = {1, 0, 0, 0, 1, 0, 1, 0, 1};
    Matrix3f A(data);

    float data_check[9] = {1, 0, 0, 0, 1, 0, -1, 0, 1};
    Matrix3f A_I(data_check);
    Matrix3f I;
    I.setIdentity();
    Matrix3f R = A * A_I;
    TEST(isEqual(R, I));

    Matrix3f R2 = A;
    R2 *= A_I;
    TEST(isEqual(R2, I));

    TEST(R2==I);
    TEST(A!=A_I);
    Matrix3f A2 = eye<float, 3>()*2;
    Matrix3f B = A2.emult(A2);
    Matrix3f B_check = eye<float, 3>()*4;
    Matrix3f C_check = eye<float, 3>()*2;
    TEST(isEqual(B, B_check));
    Matrix3f C = B_check.edivide(C_check);

    float off_diagonal_nan[9] = {2, NAN, NAN, NAN, 2, NAN, NAN, NAN, 2};
    // off diagonal are NANs because division by 0
    TEST(C == Matrix3f(off_diagonal_nan));

    // Test non-square matrix
    float data_43[12] = {1,3,2,
                         2,2,1,
                         5,2,1,
                         2,3,4
                        };
    float data_32[6] = {2,3,
                        1,7,
                        5,4
                       };

    Matrix<float, 4, 3> m43(data_43);
    Matrix<float, 3, 2> m32(data_32);

    Matrix<float, 4, 2> m42 = m43 * m32;

    float data_42[8] = {15,32,
                        11,24,
                        17,33,
                        27,43
                       };
    Matrix<float, 4, 2> m42_check(data_42);
    TEST(isEqual(m42, m42_check))

    return 0;
}

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