OpenCV/opencv/modules/core/test/test_intrin_utils.hpp

// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.

// This file is not standalone.
// It is included with these active namespaces:
//namespace opencv_test { namespace hal { namespace intrinXXX {
//CV_CPU_OPTIMIZATION_NAMESPACE_BEGIN

void test_hal_intrin_uint8();
void test_hal_intrin_int8();
void test_hal_intrin_uint16();
void test_hal_intrin_int16();
void test_hal_intrin_uint32();
void test_hal_intrin_int32();
void test_hal_intrin_uint64();
void test_hal_intrin_int64();
void test_hal_intrin_float32();
void test_hal_intrin_float64();

void test_hal_intrin_float16();

#ifndef CV_CPU_OPTIMIZATION_DECLARATIONS_ONLY

template <typename R> struct Data;
template <int N> struct initializer;

template <> struct initializer<64>
{
    template <typename R> static R init(const Data<R> & d)
    {
        return R(d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15],
        d[16], d[17], d[18], d[19], d[20], d[21], d[22], d[23], d[24], d[25], d[26], d[27], d[28], d[29], d[30], d[31],
        d[32], d[33], d[34], d[35], d[36], d[37], d[38], d[39], d[40], d[41], d[42], d[43], d[44], d[45], d[46], d[47],
        d[48], d[49], d[50], d[51], d[52], d[53], d[54], d[55], d[56], d[57], d[58], d[59], d[60], d[61], d[62], d[63]);
    }
};

template <> struct initializer<32>
{
    template <typename R> static R init(const Data<R> & d)
    {
        return R(d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15],
        d[16], d[17], d[18], d[19], d[20], d[21], d[22], d[23], d[24], d[25], d[26], d[27], d[28], d[29], d[30], d[31]);
    }
};

template <> struct initializer<16>
{
    template <typename R> static R init(const Data<R> & d)
    {
        return R(d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]);
    }
};

template <> struct initializer<8>
{
    template <typename R> static R init(const Data<R> & d)
    {
        return R(d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7]);
    }
};

template <> struct initializer<4>
{
    template <typename R> static R init(const Data<R> & d)
    {
        return R(d[0], d[1], d[2], d[3]);
    }
};

template <> struct initializer<2>
{
    template <typename R> static R init(const Data<R> & d)
    {
        return R(d[0], d[1]);
    }
};

//==================================================================================================

template <typename R> struct Data
{
    typedef typename R::lane_type LaneType;
    typedef typename V_TypeTraits<LaneType>::int_type int_type;

    Data()
    {
        for (int i = 0; i < R::nlanes; ++i)
            d[i] = (LaneType)(i + 1);
    }
    Data(LaneType val)
    {
        fill(val);
    }
    Data(const R & r)
    {
        *this = r;
    }
    operator R ()
    {
        return initializer<R::nlanes>().init(*this);
    }
    Data<R> & operator=(const R & r)
    {
        v_store(d, r);
        return *this;
    }
    template <typename T> Data<R> & operator*=(T m)
    {
        for (int i = 0; i < R::nlanes; ++i)
            d[i] *= (LaneType)m;
        return *this;
    }
    template <typename T> Data<R> & operator+=(T m)
    {
        for (int i = 0; i < R::nlanes; ++i)
            d[i] += (LaneType)m;
        return *this;
    }
    void fill(LaneType val, int s, int c = R::nlanes)
    {
        for (int i = s; i < c; ++i)
            d[i] = val;
    }
    void fill(LaneType val)
    {
        fill(val, 0);
    }
    void reverse()
    {
        for (int i = 0; i < R::nlanes / 2; ++i)
            std::swap(d[i], d[R::nlanes - i - 1]);
    }
    const LaneType & operator[](int i) const
    {
#if 0   // TODO: strange bug - AVX2 tests are failed with this
        CV_CheckGE(i, 0, ""); CV_CheckLT(i, (int)R::nlanes, "");
#else
        CV_Assert(i >= 0 && i < R::nlanes);
#endif
        return d[i];
    }
    LaneType & operator[](int i)
    {
        CV_CheckGE(i, 0, ""); CV_CheckLT(i, (int)R::nlanes, "");
        return d[i];
    }
    int_type as_int(int i) const
    {
        CV_CheckGE(i, 0, ""); CV_CheckLT(i, (int)R::nlanes, "");
        union
        {
            LaneType l;
            int_type i;
        } v;
        v.l = d[i];
        return v.i;
    }
    const LaneType * mid() const
    {
        return d + R::nlanes / 2;
    }
    LaneType * mid()
    {
        return d + R::nlanes / 2;
    }
    LaneType sum(int s, int c)
    {
        LaneType res = 0;
        for (int i = s; i < s + c; ++i)
            res += d[i];
        return res;
    }
    LaneType sum()
    {
        return sum(0, R::nlanes);
    }
    bool operator==(const Data<R> & other) const
    {
        for (int i = 0; i < R::nlanes; ++i)
            if (d[i] != other.d[i])
                return false;
        return true;
    }
    void clear()
    {
        fill(0);
    }
    bool isZero() const
    {
        return isValue(0);
    }
    bool isValue(uchar val) const
    {
        for (int i = 0; i < R::nlanes; ++i)
            if (d[i] != val)
                return false;
        return true;
    }
    LaneType d[R::nlanes];
};

template<typename R> struct AlignedData
{
    Data<R> CV_DECL_ALIGNED(CV_SIMD_WIDTH) a; // aligned
    char dummy;
    Data<R> u; // unaligned
};

template <typename R> std::ostream & operator<<(std::ostream & out, const Data<R> & d)
{
    out << "{ ";
    for (int i = 0; i < R::nlanes; ++i)
    {
        // out << std::hex << +V_TypeTraits<typename R::lane_type>::reinterpret_int(d.d[i]);
        out << +d.d[i];
        if (i + 1 < R::nlanes)
            out << ", ";
    }
    out << " }";
    return out;
}

template<typename T> static inline void EXPECT_COMPARE_EQ_(const T a, const T b)
{
    EXPECT_EQ(a, b);
}
template<> inline void EXPECT_COMPARE_EQ_<float>(const float a, const float b)
{
    EXPECT_FLOAT_EQ( a, b );
}

template<> inline void EXPECT_COMPARE_EQ_<double>(const double a, const double b)
{
    EXPECT_DOUBLE_EQ( a, b );
}

// pack functions do not do saturation when converting from 64-bit types
template<typename T, typename W>
inline T pack_saturate_cast(W a) { return saturate_cast<T>(a); }
template<>
inline int pack_saturate_cast<int, int64>(int64 a) { return static_cast<int>(a); }
template<>
inline unsigned pack_saturate_cast<unsigned, uint64>(uint64 a) { return static_cast<unsigned>(a); }

template<typename R> struct TheTest
{
    typedef typename R::lane_type LaneType;

    template <typename T1, typename T2>
    static inline void EXPECT_COMPARE_EQ(const T1 a, const T2 b)
    {
        EXPECT_COMPARE_EQ_<LaneType>((LaneType)a, (LaneType)b);
    }

    TheTest & test_loadstore()
    {
        AlignedData<R> data;
        AlignedData<R> out;

        // check if addresses are aligned and unaligned respectively
        EXPECT_EQ((size_t)0, (size_t)&data.a.d % CV_SIMD_WIDTH);
        EXPECT_NE((size_t)0, (size_t)&data.u.d % CV_SIMD_WIDTH);
        EXPECT_EQ((size_t)0, (size_t)&out.a.d % CV_SIMD_WIDTH);
        EXPECT_NE((size_t)0, (size_t)&out.u.d % CV_SIMD_WIDTH);

        // check some initialization methods
        R r1 = data.a;
        R r2 = vx_load(data.u.d);
        R r3 = vx_load_aligned(data.a.d);
        R r4(r2);
        EXPECT_EQ(data.a[0], r1.get0());
        EXPECT_EQ(data.u[0], r2.get0());
        EXPECT_EQ(data.a[0], r3.get0());
        EXPECT_EQ(data.u[0], r4.get0());

        R r_low = vx_load_low((LaneType*)data.u.d);
        EXPECT_EQ(data.u[0], r_low.get0());
        v_store(out.u.d, r_low);
        for (int i = 0; i < R::nlanes/2; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((LaneType)data.u[i], (LaneType)out.u[i]);
        }

        R r_low_align8byte = vx_load_low((LaneType*)((char*)data.u.d + (CV_SIMD_WIDTH / 2)));
        EXPECT_EQ(data.u[R::nlanes/2], r_low_align8byte.get0());
        v_store(out.u.d, r_low_align8byte);
        for (int i = 0; i < R::nlanes/2; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((LaneType)data.u[i + R::nlanes/2], (LaneType)out.u[i]);
        }

        // check some store methods
        out.u.clear();
        out.a.clear();
        v_store(out.u.d, r1);
        v_store_aligned(out.a.d, r2);
        EXPECT_EQ(data.a, out.a);
        EXPECT_EQ(data.u, out.u);

        // check more store methods
        Data<R> d, res(0);
        R r5 = d;
        v_store_high(res.mid(), r5);
        v_store_low(res.d, r5);
        EXPECT_EQ(d, res);

        // check halves load correctness
        res.clear();
        R r6 = vx_load_halves(d.d, d.mid());
        v_store(res.d, r6);
        EXPECT_EQ(d, res);

        // zero, all
        Data<R> resZ, resV;
        resZ.fill((LaneType)0);
        resV.fill((LaneType)8);
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((LaneType)0, resZ[i]);
            EXPECT_EQ((LaneType)8, resV[i]);
        }

        // reinterpret_as
        v_uint8 vu8 = v_reinterpret_as_u8(r1); out.a.clear(); v_store((uchar*)out.a.d, vu8); EXPECT_EQ(data.a, out.a);
        v_int8 vs8 = v_reinterpret_as_s8(r1); out.a.clear(); v_store((schar*)out.a.d, vs8); EXPECT_EQ(data.a, out.a);
        v_uint16 vu16 = v_reinterpret_as_u16(r1); out.a.clear(); v_store((ushort*)out.a.d, vu16); EXPECT_EQ(data.a, out.a);
        v_int16 vs16 = v_reinterpret_as_s16(r1); out.a.clear(); v_store((short*)out.a.d, vs16); EXPECT_EQ(data.a, out.a);
        v_uint32 vu32 = v_reinterpret_as_u32(r1); out.a.clear(); v_store((unsigned*)out.a.d, vu32); EXPECT_EQ(data.a, out.a);
        v_int32 vs32 = v_reinterpret_as_s32(r1); out.a.clear(); v_store((int*)out.a.d, vs32); EXPECT_EQ(data.a, out.a);
        v_uint64 vu64 = v_reinterpret_as_u64(r1); out.a.clear(); v_store((uint64*)out.a.d, vu64); EXPECT_EQ(data.a, out.a);
        v_int64 vs64 = v_reinterpret_as_s64(r1); out.a.clear(); v_store((int64*)out.a.d, vs64); EXPECT_EQ(data.a, out.a);
        v_float32 vf32 = v_reinterpret_as_f32(r1); out.a.clear(); v_store((float*)out.a.d, vf32); EXPECT_EQ(data.a, out.a);
#if CV_SIMD_64F
        v_float64 vf64 = v_reinterpret_as_f64(r1); out.a.clear(); v_store((double*)out.a.d, vf64); EXPECT_EQ(data.a, out.a);
#endif

#if CV_SIMD_WIDTH == 16
        R setall_res1 = v_setall((LaneType)5);
        R setall_res2 = v_setall<LaneType>(6);
#elif CV_SIMD_WIDTH == 32
        R setall_res1 = v256_setall((LaneType)5);
        R setall_res2 = v256_setall<LaneType>(6);
#elif CV_SIMD_WIDTH == 64
        R setall_res1 = v512_setall((LaneType)5);
        R setall_res2 = v512_setall<LaneType>(6);
#else
#error "Configuration error"
#endif
#if CV_SIMD_WIDTH > 0
        Data<R> setall_res1_; v_store(setall_res1_.d, setall_res1);
        Data<R> setall_res2_; v_store(setall_res2_.d, setall_res2);
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((LaneType)5, setall_res1_[i]);
            EXPECT_EQ((LaneType)6, setall_res2_[i]);
        }
#endif

        R vx_setall_res1 = vx_setall((LaneType)11);
        R vx_setall_res2 = vx_setall<LaneType>(12);
        Data<R> vx_setall_res1_; v_store(vx_setall_res1_.d, vx_setall_res1);
        Data<R> vx_setall_res2_; v_store(vx_setall_res2_.d, vx_setall_res2);
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((LaneType)11, vx_setall_res1_[i]);
            EXPECT_EQ((LaneType)12, vx_setall_res2_[i]);
        }

#if CV_SIMD_WIDTH == 16
        {
            uint64 a = CV_BIG_INT(0x7fffffffffffffff);
            uint64 b = (uint64)CV_BIG_INT(0xcfffffffffffffff);
            v_uint64x2 uint64_vec(a, b);
            EXPECT_EQ(a, uint64_vec.get0());
            EXPECT_EQ(b, v_extract_n<1>(uint64_vec));
        }
        {
            int64 a = CV_BIG_INT(0x7fffffffffffffff);
            int64 b = CV_BIG_INT(-1);
            v_int64x2 int64_vec(a, b);
            EXPECT_EQ(a, int64_vec.get0());
            EXPECT_EQ(b, v_extract_n<1>(int64_vec));
        }
#endif

        return *this;
    }

    TheTest & test_interleave()
    {
        Data<R> data1, data2, data3, data4;
        data2 += 20;
        data3 += 40;
        data4 += 60;


        R a = data1, b = data2, c = data3;
        R d = data1, e = data2, f = data3, g = data4;

        LaneType buf3[R::nlanes * 3];
        LaneType buf4[R::nlanes * 4];

        v_store_interleave(buf3, a, b, c);
        v_store_interleave(buf4, d, e, f, g);

        Data<R> z(0);
        a = b = c = d = e = f = g = z;

        v_load_deinterleave(buf3, a, b, c);
        v_load_deinterleave(buf4, d, e, f, g);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(data1, Data<R>(a));
            EXPECT_EQ(data2, Data<R>(b));
            EXPECT_EQ(data3, Data<R>(c));

            EXPECT_EQ(data1, Data<R>(d));
            EXPECT_EQ(data2, Data<R>(e));
            EXPECT_EQ(data3, Data<R>(f));
            EXPECT_EQ(data4, Data<R>(g));
        }

        return *this;
    }

    // float32x4 only
    TheTest & test_interleave_2channel()
    {
        Data<R> data1, data2;
        data2 += 20;

        R a = data1, b = data2;

        LaneType buf2[R::nlanes * 2];

        v_store_interleave(buf2, a, b);

        Data<R> z(0);
        a = b = z;

        v_load_deinterleave(buf2, a, b);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(data1, Data<R>(a));
            EXPECT_EQ(data2, Data<R>(b));
        }

        return *this;
    }

    // v_expand and v_load_expand
    TheTest & test_expand()
    {
        typedef typename V_RegTraits<R>::w_reg Rx2;
        Data<R> dataA;
        R a = dataA;

        Data<Rx2> resB = vx_load_expand(dataA.d);

        Rx2 c, d, e, f;
        v_expand(a, c, d);

        e = v_expand_low(a);
        f = v_expand_high(a);

        Data<Rx2> resC = c, resD = d, resE = e, resF = f;
        const int n = Rx2::nlanes;
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i], resB[i]);
            EXPECT_EQ(dataA[i], resC[i]);
            EXPECT_EQ(dataA[i + n], resD[i]);
            EXPECT_EQ(dataA[i], resE[i]);
            EXPECT_EQ(dataA[i + n], resF[i]);
        }

        return *this;
    }

    TheTest & test_expand_q()
    {
        typedef typename V_RegTraits<R>::q_reg Rx4;
        Data<R> data;
        Data<Rx4> out = vx_load_expand_q(data.d);
        const int n = Rx4::nlanes;
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(data[i], out[i]);
        }

        return *this;
    }

    TheTest & test_addsub()
    {
        Data<R> dataA, dataB;
        dataB.reverse();
        R a = dataA, b = dataB;

        Data<R> resC = a + b, resD = a - b;
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(saturate_cast<LaneType>(dataA[i] + dataB[i]), resC[i]);
            EXPECT_EQ(saturate_cast<LaneType>(dataA[i] - dataB[i]), resD[i]);
        }

        return *this;
    }

    TheTest & test_arithm_wrap()
    {
        Data<R> dataA, dataB;
        dataB.reverse();
        R a = dataA, b = dataB;

        Data<R> resC = v_add_wrap(a, b),
                resD = v_sub_wrap(a, b),
                resE = v_mul_wrap(a, b);
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((LaneType)(dataA[i] + dataB[i]), resC[i]);
            EXPECT_EQ((LaneType)(dataA[i] - dataB[i]), resD[i]);
            EXPECT_EQ((LaneType)(dataA[i] * dataB[i]), resE[i]);
        }
        return *this;
    }

    TheTest & test_mul()
    {
        Data<R> dataA, dataB;
        dataA[1] = static_cast<LaneType>(std::numeric_limits<LaneType>::max());
        dataB.reverse();
        R a = dataA, b = dataB;

        Data<R> resC = a * b;
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(saturate_cast<LaneType>(dataA[i] * dataB[i]), resC[i]);
        }

        return *this;
    }

    TheTest & test_div()
    {
        Data<R> dataA, dataB;
        dataB.reverse();
        R a = dataA, b = dataB;

        Data<R> resC = a / b;
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i] / dataB[i], resC[i]);
        }

        return *this;
    }

    TheTest & test_mul_expand()
    {
        typedef typename V_RegTraits<R>::w_reg Rx2;
        Data<R> dataA, dataB(2);
        R a = dataA, b = dataB;
        Rx2 c, d;

        v_mul_expand(a, b, c, d);

        Data<Rx2> resC = c, resD = d;
        const int n = R::nlanes / 2;
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((typename Rx2::lane_type)dataA[i] * dataB[i], resC[i]);
            EXPECT_EQ((typename Rx2::lane_type)dataA[i + n] * dataB[i + n], resD[i]);
        }

        return *this;
    }

    TheTest & test_mul_hi()
    {
        // typedef typename V_RegTraits<R>::w_reg Rx2;
        Data<R> dataA, dataB(32767);
        R a = dataA, b = dataB;

        R c = v_mul_hi(a, b);

        Data<R> resC = c;
        const int n = R::nlanes / 2;
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((typename R::lane_type)((dataA[i] * dataB[i]) >> 16), resC[i]);
        }

        return *this;
    }

    TheTest & test_abs()
    {
        typedef typename V_RegTraits<R>::u_reg Ru;
        typedef typename Ru::lane_type u_type;
        Data<R> dataA, dataB(10);
        R a = dataA, b = dataB;
        a = a - b;

        Data<Ru> resC = v_abs(a);

        for (int i = 0; i < Ru::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((u_type)std::abs(dataA[i] - dataB[i]), resC[i]);
        }

        return *this;
    }

    template <int s>
    TheTest & test_shift()
    {
        SCOPED_TRACE(s);
        Data<R> dataA;
        dataA[0] = static_cast<LaneType>(std::numeric_limits<LaneType>::max());
        R a = dataA;

        Data<R> resB = a << s, resC = v_shl<s>(a), resD = a >> s, resE = v_shr<s>(a);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(static_cast<LaneType>(dataA[i] << s), resB[i]);
            EXPECT_EQ(static_cast<LaneType>(dataA[i] << s), resC[i]);
            EXPECT_EQ(static_cast<LaneType>(dataA[i] >> s), resD[i]);
            EXPECT_EQ(static_cast<LaneType>(dataA[i] >> s), resE[i]);
        }
        return *this;
    }

    TheTest & test_cmp()
    {
        Data<R> dataA, dataB;
        dataB.reverse();
        dataB += 1;
        R a = dataA, b = dataB;

        Data<R> resC = (a == b);
        Data<R> resD = (a != b);
        Data<R> resE = (a > b);
        Data<R> resF = (a >= b);
        Data<R> resG = (a < b);
        Data<R> resH = (a <= b);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i] == dataB[i], resC[i] != 0);
            EXPECT_EQ(dataA[i] != dataB[i], resD[i] != 0);
            EXPECT_EQ(dataA[i] >  dataB[i], resE[i] != 0);
            EXPECT_EQ(dataA[i] >= dataB[i], resF[i] != 0);
            EXPECT_EQ(dataA[i] <  dataB[i], resG[i] != 0);
            EXPECT_EQ(dataA[i] <= dataB[i], resH[i] != 0);
        }
        return *this;
    }

    TheTest & test_dotprod()
    {
        typedef typename V_RegTraits<R>::w_reg Rx2;
        typedef typename Rx2::lane_type w_type;

        Data<R> dataA, dataB;
        dataA += std::numeric_limits<LaneType>::max() - R::nlanes;
        dataB += std::numeric_limits<LaneType>::min() + R::nlanes;
        R a = dataA, b = dataB;

        Data<Rx2> dataC;
        dataC += std::numeric_limits<w_type>::is_signed ?
                    std::numeric_limits<w_type>::min() :
                    std::numeric_limits<w_type>::max() - R::nlanes * (dataB[0] + 1);
        Rx2 c = dataC;

        Data<Rx2> resD = v_dotprod(a, b),
                  resE = v_dotprod(a, b, c);

        const int n = R::nlanes / 2;
        w_type sumAB = 0, sumABC = 0, tmp_sum;
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));

            tmp_sum = (w_type)dataA[i*2] * (w_type)dataB[i*2] +
                      (w_type)dataA[i*2 + 1] * (w_type)dataB[i*2 + 1];
            sumAB  += tmp_sum;
            EXPECT_EQ(tmp_sum, resD[i]);

            tmp_sum = tmp_sum + dataC[i];
            sumABC += tmp_sum;
            EXPECT_EQ(tmp_sum, resE[i]);
        }

        w_type resF = v_reduce_sum(v_dotprod_fast(a, b)),
               resG = v_reduce_sum(v_dotprod_fast(a, b, c));
        EXPECT_EQ(sumAB,  resF);
        EXPECT_EQ(sumABC, resG);
        return *this;
    }

    TheTest & test_dotprod_expand()
    {
        typedef typename V_RegTraits<R>::q_reg Rx4;
        typedef typename Rx4::lane_type l4_type;

        Data<R> dataA, dataB;
        dataA += std::numeric_limits<LaneType>::max() - R::nlanes;
        dataB += std::numeric_limits<LaneType>::min() + R::nlanes;
        R a = dataA, b = dataB;

        Data<Rx4> dataC;
        Rx4 c = dataC;

        Data<Rx4> resD = v_dotprod_expand(a, b),
                  resE = v_dotprod_expand(a, b, c);

        l4_type sumAB = 0, sumABC = 0, tmp_sum;
        for (int i = 0; i < Rx4::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            tmp_sum  = (l4_type)dataA[i*4]     * (l4_type)dataB[i*4]     +
                       (l4_type)dataA[i*4 + 1] * (l4_type)dataB[i*4 + 1] +
                       (l4_type)dataA[i*4 + 2] * (l4_type)dataB[i*4 + 2] +
                       (l4_type)dataA[i*4 + 3] * (l4_type)dataB[i*4 + 3];
            sumAB  += tmp_sum;
            EXPECT_EQ(tmp_sum, resD[i]);

            tmp_sum = tmp_sum + dataC[i];
            sumABC += tmp_sum;
            EXPECT_EQ(tmp_sum, resE[i]);
        }

        l4_type resF = v_reduce_sum(v_dotprod_expand_fast(a, b)),
                resG = v_reduce_sum(v_dotprod_expand_fast(a, b, c));
        EXPECT_EQ(sumAB,  resF);
        EXPECT_EQ(sumABC, resG);

        return *this;
    }

    TheTest & test_dotprod_expand_f64()
    {
    #if CV_SIMD_64F
        Data<R> dataA, dataB;
        dataA += std::numeric_limits<LaneType>::max() - R::nlanes;
        dataB += std::numeric_limits<LaneType>::min();
        R a = dataA, b = dataB;

        Data<v_float64> dataC;
        v_float64 c = dataC;

        Data<v_float64> resA = v_dotprod_expand(a, a),
                        resB = v_dotprod_expand(b, b),
                        resC = v_dotprod_expand(a, b, c);

        const int n = R::nlanes / 2;
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_COMPARE_EQ((double)dataA[i*2]     * (double)dataA[i*2] +
                              (double)dataA[i*2 + 1] * (double)dataA[i*2  + 1], resA[i]);
            EXPECT_COMPARE_EQ((double)dataB[i*2]     * (double)dataB[i*2] +
                              (double)dataB[i*2 + 1] * (double)dataB[i*2  + 1], resB[i]);
            EXPECT_COMPARE_EQ((double)dataA[i*2]     * (double)dataB[i*2] +
                              (double)dataA[i*2 + 1] * (double)dataB[i*2  + 1] + dataC[i], resC[i]);
        }
    #endif
        return *this;
    }

    TheTest & test_logic()
    {
        Data<R> dataA, dataB(2);
        R a = dataA, b = dataB;

        Data<R> resC = a & b, resD = a | b, resE = a ^ b, resF = ~a;
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i] & dataB[i], resC[i]);
            EXPECT_EQ(dataA[i] | dataB[i], resD[i]);
            EXPECT_EQ(dataA[i] ^ dataB[i], resE[i]);
            EXPECT_EQ((LaneType)~dataA[i], resF[i]);
        }

        return *this;
    }

    TheTest & test_sqrt_abs()
    {
        Data<R> dataA, dataD;
        dataD *= -1.0;
        R a = dataA, d = dataD;

        Data<R> resB = v_sqrt(a), resC = v_invsqrt(a), resE = v_abs(d);
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_COMPARE_EQ((float)std::sqrt(dataA[i]), (float)resB[i]);
            EXPECT_COMPARE_EQ((float)(1/std::sqrt(dataA[i])), (float)resC[i]);
            EXPECT_COMPARE_EQ((float)abs(dataA[i]), (float)resE[i]);
        }

        return *this;
    }

    TheTest & test_min_max()
    {
        Data<R> dataA, dataB;
        dataB.reverse();
        R a = dataA, b = dataB;

        Data<R> resC = v_min(a, b), resD = v_max(a, b);
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(std::min(dataA[i], dataB[i]), resC[i]);
            EXPECT_EQ(std::max(dataA[i], dataB[i]), resD[i]);
        }

        return *this;
    }

    TheTest & test_popcount()
    {
        typedef typename V_RegTraits<R>::u_reg Ru;
        static unsigned popcountTable[] = {
            0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, //0x00-0x0f
            1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, //0x10-0x1f
            1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, //0x20-0x2f
            2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, //0x30-0x3f
            1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, //0x40-0x4f
            2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, //0x50-0x5f
            2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, //0x60-0x6f
            3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, //0x70-0x7f
            1                                               //0x80
        };
        Data<R> dataA;
        R a = dataA;

        Data<Ru> resB = v_popcount(a);
        for (int i = 0; i < Ru::nlanes; ++i)
            EXPECT_EQ(popcountTable[i + 1], resB[i]);

        return *this;
    }

    TheTest & test_absdiff()
    {
        typedef typename V_RegTraits<R>::u_reg Ru;
        typedef typename Ru::lane_type u_type;
        Data<R> dataA(std::numeric_limits<LaneType>::max()),
                dataB(std::numeric_limits<LaneType>::min());
        dataA[0] = (LaneType)-1;
        dataB[0] = 1;
        dataA[1] = 2;
        dataB[1] = (LaneType)-2;
        R a = dataA, b = dataB;
        Data<Ru> resC = v_absdiff(a, b);
        const u_type mask = std::numeric_limits<LaneType>::is_signed ? (u_type)(1 << (sizeof(u_type)*8 - 1)) : 0;
        for (int i = 0; i < Ru::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            u_type uA = dataA[i] ^ mask;
            u_type uB = dataB[i] ^ mask;
            EXPECT_EQ(uA > uB ? uA - uB : uB - uA, resC[i]);
        }
        return *this;
    }

    TheTest & test_float_absdiff()
    {
        Data<R> dataA(std::numeric_limits<LaneType>::max()),
                dataB(std::numeric_limits<LaneType>::min());
        dataA[0] = -1;
        dataB[0] = 1;
        dataA[1] = 2;
        dataB[1] = -2;
        R a = dataA, b = dataB;
        Data<R> resC = v_absdiff(a, b);
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i] > dataB[i] ? dataA[i] - dataB[i] : dataB[i] - dataA[i], resC[i]);
        }
        return *this;
    }

    TheTest & test_absdiffs()
    {
        Data<R> dataA(std::numeric_limits<LaneType>::max()),
                dataB(std::numeric_limits<LaneType>::min());
        dataA[0] = (LaneType)-1;
        dataB[0] = 1;
        dataA[1] = 2;
        dataB[1] = (LaneType)-2;
        R a = dataA, b = dataB;
        Data<R> resC = v_absdiffs(a, b);
        for (int i = 0; i < R::nlanes; ++i)
        {
            EXPECT_EQ(saturate_cast<LaneType>(std::abs(dataA[i] - dataB[i])), resC[i]);
        }
        return *this;
    }

    TheTest & test_reduce()
    {
        Data<R> dataA;
        int sum = 0;
        for (int i = 0; i < R::nlanes; ++i)
        {
            sum += (int)(dataA[i]);   // To prevent a constant overflow with int8
        }
        R a = dataA;
        EXPECT_EQ((LaneType)1, (LaneType)v_reduce_min(a));
        EXPECT_EQ((LaneType)(R::nlanes), (LaneType)v_reduce_max(a));
        EXPECT_EQ((int)(sum), (int)v_reduce_sum(a));
        dataA[0] += R::nlanes;
        R an = dataA;
        EXPECT_EQ((LaneType)2, (LaneType)v_reduce_min(an));
        return *this;
    }

    TheTest & test_reduce_sad()
    {
        Data<R> dataA, dataB(R::nlanes/2);
        R a = dataA;
        R b = dataB;
        EXPECT_EQ((unsigned)(R::nlanes*R::nlanes/4), v_reduce_sad(a, b));
        return *this;
    }

    TheTest & test_mask()
    {
        typedef typename V_RegTraits<R>::int_reg int_reg;
        typedef typename V_RegTraits<int_reg>::u_reg uint_reg;
        typedef typename int_reg::lane_type int_type;
        typedef typename uint_reg::lane_type uint_type;

        Data<R> dataA, dataB(0), dataC, dataD(1), dataE(2);
        dataA[1] *= (LaneType)-1;
        union
        {
            LaneType l;
            uint_type ui;
        }
        all1s;
        all1s.ui = (uint_type)-1;
        LaneType mask_one = all1s.l;
        dataB[R::nlanes - 1] = mask_one;
        R l = dataB;
        dataB[1] = mask_one;
        dataB[R::nlanes / 2] = mask_one;
        dataC *= (LaneType)-1;
        R a = dataA, b = dataB, c = dataC, d = dataD, e = dataE;
        dataC[R::nlanes - 1] = 0;
        R nl = dataC;

        EXPECT_EQ(2, v_signmask(a));
#if CV_SIMD_WIDTH <= 32
        EXPECT_EQ(2 | (1 << (R::nlanes / 2)) | (1 << (R::nlanes - 1)), v_signmask(b));
#endif

        EXPECT_EQ(false, v_check_all(a));
        EXPECT_EQ(false, v_check_all(b));
        EXPECT_EQ(true, v_check_all(c));
        EXPECT_EQ(false, v_check_all(nl));

        EXPECT_EQ(true, v_check_any(a));
        EXPECT_EQ(true, v_check_any(b));
        EXPECT_EQ(true, v_check_any(c));
        EXPECT_EQ(true, v_check_any(l));
        R f = v_select(b, d, e);
        Data<R> resF = f;
        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            int_type m2 = dataB.as_int(i);
            EXPECT_EQ((dataD.as_int(i) & m2) | (dataE.as_int(i) & ~m2), resF.as_int(i));
        }

        return *this;
    }

    template <int s>
    TheTest & test_pack()
    {
        SCOPED_TRACE(s);
        typedef typename V_RegTraits<R>::w_reg Rx2;
        typedef typename Rx2::lane_type w_type;
        Data<Rx2> dataA, dataB;
        dataA += std::numeric_limits<LaneType>::is_signed ? -10 : 10;
        dataB *= 10;
        dataB[0] = static_cast<w_type>(std::numeric_limits<LaneType>::max()) + 17; // to check saturation
        Rx2 a = dataA, b = dataB;

        Data<R> resC = v_pack(a, b);
        Data<R> resD = v_rshr_pack<s>(a, b);

        Data<R> resE(0);
        v_pack_store(resE.d, b);

        Data<R> resF(0);
        v_rshr_pack_store<s>(resF.d, b);

        const int n = Rx2::nlanes;
        const w_type add = (w_type)1 << (s - 1);
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(pack_saturate_cast<LaneType>(dataA[i]), resC[i]);
            EXPECT_EQ(pack_saturate_cast<LaneType>(dataB[i]), resC[i + n]);
            EXPECT_EQ(pack_saturate_cast<LaneType>((dataA[i] + add) >> s), resD[i]);
            EXPECT_EQ(pack_saturate_cast<LaneType>((dataB[i] + add) >> s), resD[i + n]);
            EXPECT_EQ(pack_saturate_cast<LaneType>(dataB[i]), resE[i]);
            EXPECT_EQ((LaneType)0, resE[i + n]);
            EXPECT_EQ(pack_saturate_cast<LaneType>((dataB[i] + add) >> s), resF[i]);
            EXPECT_EQ((LaneType)0, resF[i + n]);
        }
        return *this;
    }

    template <int s>
    TheTest & test_pack_u()
    {
        SCOPED_TRACE(s);
        //typedef typename V_RegTraits<LaneType>::w_type LaneType_w;
        typedef typename V_RegTraits<R>::w_reg R2;
        typedef typename V_RegTraits<R2>::int_reg Ri2;
        typedef typename Ri2::lane_type w_type;

        Data<Ri2> dataA, dataB;
        dataA += -10;
        dataB *= 10;
        dataB[0] = static_cast<w_type>(std::numeric_limits<LaneType>::max()) + 17; // to check saturation
        Ri2 a = dataA, b = dataB;

        Data<R> resC = v_pack_u(a, b);
        Data<R> resD = v_rshr_pack_u<s>(a, b);

        Data<R> resE(0);
        v_pack_u_store(resE.d, b);

        Data<R> resF(0);
        v_rshr_pack_u_store<s>(resF.d, b);

        const int n = Ri2::nlanes;
        const w_type add = (w_type)1 << (s - 1);
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(pack_saturate_cast<LaneType>(dataA[i]), resC[i]);
            EXPECT_EQ(pack_saturate_cast<LaneType>(dataB[i]), resC[i + n]);
            EXPECT_EQ(pack_saturate_cast<LaneType>((dataA[i] + add) >> s), resD[i]);
            EXPECT_EQ(pack_saturate_cast<LaneType>((dataB[i] + add) >> s), resD[i + n]);
            EXPECT_EQ(pack_saturate_cast<LaneType>(dataB[i]), resE[i]);
            EXPECT_EQ((LaneType)0, resE[i + n]);
            EXPECT_EQ(pack_saturate_cast<LaneType>((dataB[i] + add) >> s), resF[i]);
            EXPECT_EQ((LaneType)0, resF[i + n]);
        }
        return *this;
    }

    // v_uint8 only
    TheTest & test_pack_b()
    {
        // 16-bit
        Data<R> dataA, dataB;
        dataB.fill(0, R::nlanes / 2);

        R a = dataA, b = dataB;
        Data<R> maskA = a == b, maskB = a != b;

        a = maskA; b = maskB;
        Data<R> res  = v_pack_b(v_reinterpret_as_u16(a), v_reinterpret_as_u16(b));
        for (int i = 0; i < v_uint16::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(maskA[i * 2], res[i]);
            EXPECT_EQ(maskB[i * 2], res[i + v_uint16::nlanes]);
        }

        // 32-bit
        Data<R> dataC, dataD;
        dataD.fill(0, R::nlanes / 2);

        R c = dataC, d = dataD;
        Data<R> maskC = c == d, maskD = c != d;

        c = maskC; d = maskD;
        res = v_pack_b
        (
            v_reinterpret_as_u32(a), v_reinterpret_as_u32(b),
            v_reinterpret_as_u32(c), v_reinterpret_as_u32(d)
        );

        for (int i = 0; i < v_uint32::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(maskA[i * 4], res[i]);
            EXPECT_EQ(maskB[i * 4], res[i + v_uint32::nlanes]);
            EXPECT_EQ(maskC[i * 4], res[i + v_uint32::nlanes * 2]);
            EXPECT_EQ(maskD[i * 4], res[i + v_uint32::nlanes * 3]);
        }

        // 64-bit
        Data<R> dataE, dataF, dataG(0), dataH(0xFF);
        dataF.fill(0, R::nlanes / 2);

        R e = dataE, f = dataF, g = dataG, h = dataH;
        Data<R> maskE = e == f, maskF = e != f;

        e = maskE; f = maskF;
        res = v_pack_b
        (
            v_reinterpret_as_u64(a), v_reinterpret_as_u64(b),
            v_reinterpret_as_u64(c), v_reinterpret_as_u64(d),
            v_reinterpret_as_u64(e), v_reinterpret_as_u64(f),
            v_reinterpret_as_u64(g), v_reinterpret_as_u64(h)
        );

        for (int i = 0; i < v_uint64::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(maskA[i * 8], res[i]);
            EXPECT_EQ(maskB[i * 8], res[i + v_uint64::nlanes]);
            EXPECT_EQ(maskC[i * 8], res[i + v_uint64::nlanes * 2]);
            EXPECT_EQ(maskD[i * 8], res[i + v_uint64::nlanes * 3]);

            EXPECT_EQ(maskE[i * 8], res[i + v_uint64::nlanes * 4]);
            EXPECT_EQ(maskF[i * 8], res[i + v_uint64::nlanes * 5]);
            EXPECT_EQ(dataG[i * 8], res[i + v_uint64::nlanes * 6]);
            EXPECT_EQ(dataH[i * 8], res[i + v_uint64::nlanes * 7]);
        }

        return *this;
    }

    TheTest & test_unpack()
    {
        Data<R> dataA, dataB;
        dataB *= 10;
        R a = dataA, b = dataB;

        R c, d, e, f, lo, hi;
        v_zip(a, b, c, d);
        v_recombine(a, b, e, f);
        lo = v_combine_low(a, b);
        hi = v_combine_high(a, b);

        Data<R> resC = c, resD = d, resE = e, resF = f, resLo = lo, resHi = hi;

        const int n = R::nlanes/2;
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i], resC[i*2]);
            EXPECT_EQ(dataB[i], resC[i*2+1]);
            EXPECT_EQ(dataA[i+n], resD[i*2]);
            EXPECT_EQ(dataB[i+n], resD[i*2+1]);

            EXPECT_EQ(dataA[i], resE[i]);
            EXPECT_EQ(dataB[i], resE[i+n]);
            EXPECT_EQ(dataA[i+n], resF[i]);
            EXPECT_EQ(dataB[i+n], resF[i+n]);

            EXPECT_EQ(dataA[i], resLo[i]);
            EXPECT_EQ(dataB[i], resLo[i+n]);
            EXPECT_EQ(dataA[i+n], resHi[i]);
            EXPECT_EQ(dataB[i+n], resHi[i+n]);
        }

        return *this;
    }

    TheTest & test_reverse()
    {
        Data<R> dataA;
        R a = dataA;

        Data<R> resB = v_reverse(a);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[R::nlanes - i - 1], resB[i]);
        }

        return *this;
    }

    template<int s>
    TheTest & test_extract()
    {
        SCOPED_TRACE(s);
        Data<R> dataA, dataB;
        dataB *= 10;
        R a = dataA, b = dataB;

        Data<R> resC = v_extract<s>(a, b);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            if (i + s >= R::nlanes)
                EXPECT_EQ(dataB[i - R::nlanes + s], resC[i]);
            else
                EXPECT_EQ(dataA[i + s], resC[i]);
        }

        return *this;
    }

    template<int s>
    TheTest & test_rotate()
    {
        SCOPED_TRACE(s);
        Data<R> dataA, dataB;
        dataB *= 10;
        R a = dataA, b = dataB;

        Data<R> resC = v_rotate_right<s>(a);
        Data<R> resD = v_rotate_right<s>(a, b);

        Data<R> resE = v_rotate_left<s>(a);
        Data<R> resF = v_rotate_left<s>(a, b);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            if (i + s >= R::nlanes)
            {
                EXPECT_EQ((LaneType)0, resC[i]);
                EXPECT_EQ(dataB[i - R::nlanes + s], resD[i]);

                EXPECT_EQ((LaneType)0, resE[i - R::nlanes + s]);
                EXPECT_EQ(dataB[i], resF[i - R::nlanes + s]);
            }
            else
            {
                EXPECT_EQ(dataA[i + s], resC[i]);
                EXPECT_EQ(dataA[i + s], resD[i]);

                EXPECT_EQ(dataA[i], resE[i + s]);
                EXPECT_EQ(dataA[i], resF[i + s]);
            }
        }
        return *this;
    }

    template<int s>
    TheTest & test_extract_n()
    {
        SCOPED_TRACE(s);
        Data<R> dataA;
        LaneType test_value = (LaneType)(s + 50);
        dataA[s] = test_value;
        R a = dataA;

        LaneType res = v_extract_n<s>(a);
        EXPECT_EQ(test_value, res);

        return *this;
    }

    template<int s>
    TheTest & test_broadcast_element()
    {
        SCOPED_TRACE(s);
        Data<R> dataA;
        LaneType test_value = (LaneType)(s + 50);
        dataA[s] = test_value;
        R a = dataA;

        Data<R> res = v_broadcast_element<s>(a);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(i);
            EXPECT_EQ(test_value, res[i]);
        }
        return *this;
    }

    TheTest & test_float_math()
    {
        typedef typename V_RegTraits<R>::round_reg Ri;
        Data<R> data1, data2, data3;
        data1 *= 1.1;
        data2 += 10;
        R a1 = data1, a2 = data2, a3 = data3;

        Data<Ri> resB = v_round(a1),
                 resC = v_trunc(a1),
                 resD = v_floor(a1),
                 resE = v_ceil(a1);

        Data<R> resF = v_magnitude(a1, a2),
                resG = v_sqr_magnitude(a1, a2),
                resH = v_muladd(a1, a2, a3);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(cvRound(data1[i]), resB[i]);
            EXPECT_EQ((typename Ri::lane_type)data1[i], resC[i]);
            EXPECT_EQ(cvFloor(data1[i]), resD[i]);
            EXPECT_EQ(cvCeil(data1[i]), resE[i]);

            EXPECT_COMPARE_EQ(std::sqrt(data1[i]*data1[i] + data2[i]*data2[i]), resF[i]);
            EXPECT_COMPARE_EQ(data1[i]*data1[i] + data2[i]*data2[i], resG[i]);
            EXPECT_COMPARE_EQ(data1[i]*data2[i] + data3[i], resH[i]);
        }

        return *this;
    }

    TheTest & test_float_cvt32()
    {
        typedef v_float32 Rt;
        Data<R> dataA;
        dataA *= 1.1;
        R a = dataA;
        Rt b = v_cvt_f32(a);
        Data<Rt> resB = b;
        int n = std::min<int>(Rt::nlanes, R::nlanes);
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((typename Rt::lane_type)dataA[i], resB[i]);
        }
        return *this;
    }

    TheTest & test_float_cvt64()
    {
#if CV_SIMD_64F
        typedef v_float64 Rt;
        Data<R> dataA;
        dataA *= 1.1;
        R a = dataA;
        Rt b = v_cvt_f64(a);
        Rt c = v_cvt_f64_high(a);
        Data<Rt> resB = b;
        Data<Rt> resC = c;
        int n = std::min<int>(Rt::nlanes, R::nlanes);
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((typename Rt::lane_type)dataA[i], resB[i]);
        }
        for (int i = 0; i < n; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((typename Rt::lane_type)dataA[i+n], resC[i]);
        }
#endif
        return *this;
    }

    TheTest & test_cvt64_double()
    {
#if CV_SIMD_64F
        Data<R> dataA(std::numeric_limits<LaneType>::max()),
                dataB(std::numeric_limits<LaneType>::min());
        dataB += R::nlanes;

        R a = dataA, b = dataB;
        v_float64 c = v_cvt_f64(a), d = v_cvt_f64(b);

        Data<v_float64> resC = c;
        Data<v_float64> resD = d;

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ((double)dataA[i], resC[i]);
            EXPECT_EQ((double)dataB[i], resD[i]);
        }
#endif
        return *this;
    }

    TheTest & test_matmul()
    {
        Data<R> dataV, dataA, dataB, dataC, dataD;
        dataB.reverse();
        dataC += 2;
        dataD *= 0.3;
        R v = dataV, a = dataA, b = dataB, c = dataC, d = dataD;

        Data<R> res = v_matmul(v, a, b, c, d);
        for (int i = 0; i < R::nlanes; i += 4)
        {
            for (int j = i; j < i + 4; ++j)
            {
                SCOPED_TRACE(cv::format("i=%d j=%d", i, j));
                LaneType val = dataV[i]     * dataA[j]
                             + dataV[i + 1] * dataB[j]
                             + dataV[i + 2] * dataC[j]
                             + dataV[i + 3] * dataD[j];
                EXPECT_COMPARE_EQ(val, res[j]);
            }
        }

        Data<R> resAdd = v_matmuladd(v, a, b, c, d);
        for (int i = 0; i < R::nlanes; i += 4)
        {
            for (int j = i; j < i + 4; ++j)
            {
                SCOPED_TRACE(cv::format("i=%d j=%d", i, j));
                LaneType val = dataV[i]     * dataA[j]
                             + dataV[i + 1] * dataB[j]
                             + dataV[i + 2] * dataC[j]
                             + dataD[j];
                EXPECT_COMPARE_EQ(val, resAdd[j]);
            }
        }
        return *this;
    }

    TheTest & test_transpose()
    {
        Data<R> dataA, dataB, dataC, dataD;
        dataB *= 5;
        dataC *= 10;
        dataD *= 15;
        R a = dataA, b = dataB, c = dataC, d = dataD;
        R e, f, g, h;
        v_transpose4x4(a, b, c, d,
                       e, f, g, h);

        Data<R> res[4] = {e, f, g, h};
        for (int i = 0; i < R::nlanes; i += 4)
        {
            for (int j = 0; j < 4; ++j)
            {
                SCOPED_TRACE(cv::format("i=%d j=%d", i, j));
                EXPECT_EQ(dataA[i + j], res[j][i]);
                EXPECT_EQ(dataB[i + j], res[j][i + 1]);
                EXPECT_EQ(dataC[i + j], res[j][i + 2]);
                EXPECT_EQ(dataD[i + j], res[j][i + 3]);
            }
        }
        return *this;
    }

    TheTest & test_reduce_sum4()
    {
        Data<R> dataA, dataB, dataC, dataD;
        dataB *= 0.01f;
        dataC *= 0.001f;
        dataD *= 0.002f;

        R a = dataA, b = dataB, c = dataC, d = dataD;
        Data<R> res = v_reduce_sum4(a, b, c, d);

        for (int i = 0; i < R::nlanes; i += 4)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_COMPARE_EQ(dataA.sum(i, 4), res[i]);
            EXPECT_COMPARE_EQ(dataB.sum(i, 4), res[i + 1]);
            EXPECT_COMPARE_EQ(dataC.sum(i, 4), res[i + 2]);
            EXPECT_COMPARE_EQ(dataD.sum(i, 4), res[i + 3]);
        }
        return *this;
    }

    TheTest & test_loadstore_fp16_f32()
    {
        printf("test_loadstore_fp16_f32 ...\n");
        AlignedData<v_uint16> data; data.a.clear();
        data.a.d[0] = 0x3c00; // 1.0
        data.a.d[R::nlanes - 1] = (unsigned short)0xc000; // -2.0
        AlignedData<v_float32> data_f32; data_f32.a.clear();
        AlignedData<v_uint16> out;

        R r1 = vx_load_expand((const cv::float16_t*)data.a.d);
        R r2(r1);
        EXPECT_EQ(1.0f, r1.get0());
        v_store(data_f32.a.d, r2);
        EXPECT_EQ(-2.0f, data_f32.a.d[R::nlanes - 1]);

        out.a.clear();
        v_pack_store((cv::float16_t*)out.a.d, r2);
        for (int i = 0; i < R::nlanes; ++i)
        {
            EXPECT_EQ(data.a[i], out.a[i]) << "i=" << i;
        }

        return *this;
    }

#if 0
    TheTest & test_loadstore_fp16()
    {
        printf("test_loadstore_fp16 ...\n");
        AlignedData<R> data;
        AlignedData<R> out;

        // check if addresses are aligned and unaligned respectively
        EXPECT_EQ((size_t)0, (size_t)&data.a.d % CV_SIMD_WIDTH);
        EXPECT_NE((size_t)0, (size_t)&data.u.d % CV_SIMD_WIDTH);
        EXPECT_EQ((size_t)0, (size_t)&out.a.d % CV_SIMD_WIDTH);
        EXPECT_NE((size_t)0, (size_t)&out.u.d % CV_SIMD_WIDTH);

        // check some initialization methods
        R r1 = data.u;
        R r2 = vx_load_expand((const float16_t*)data.a.d);
        R r3(r2);
        EXPECT_EQ(data.u[0], r1.get0());
        EXPECT_EQ(data.a[0], r2.get0());
        EXPECT_EQ(data.a[0], r3.get0());

        // check some store methods
        out.a.clear();
        v_store(out.a.d, r1);
        EXPECT_EQ(data.a, out.a);

        return *this;
    }
    TheTest & test_float_cvt_fp16()
    {
        printf("test_float_cvt_fp16 ...\n");
        AlignedData<v_float32> data;

        // check conversion
        v_float32 r1 = vx_load(data.a.d);
        v_float16 r2 = v_cvt_f16(r1, vx_setzero_f32());
        v_float32 r3 = v_cvt_f32(r2);
        EXPECT_EQ(0x3c00, r2.get0());
        EXPECT_EQ(r3.get0(), r1.get0());

        return *this;
    }
#endif

#if CV_SIMD_64F
    TheTest & test_cmp64()
    {
        Data<R> dataA, dataB;
        R a = dataA, b = dataB;

        for (int i = 0; i < R::nlanes; ++i)
        {
            dataA[i] = dataB[i];
        }
        dataA[0]++;

        a = dataA, b = dataB;

        Data<R> resC = (a == b);
        Data<R> resD = (a != b);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i] == dataB[i], resC[i] != 0);
            EXPECT_EQ(dataA[i] != dataB[i], resD[i] != 0);
        }

        for (int i = 0; i < R::nlanes; ++i)
        {
            dataA[i] = dataB[i] = (LaneType)-1;
        }

        a = dataA, b = dataB;

        resC = (a == b);
        resD = (a != b);

        for (int i = 0; i < R::nlanes; ++i)
        {
            SCOPED_TRACE(cv::format("i=%d", i));
            EXPECT_EQ(dataA[i] == dataB[i], resC[i] != 0);
            EXPECT_EQ(dataA[i] != dataB[i], resD[i] != 0);
        }
        return *this;
    }
#endif
};


#if 1
#define DUMP_ENTRY(type) printf("SIMD%d: %s\n", 8*(int)sizeof(v_uint8), CV__TRACE_FUNCTION);
#endif

//=============  8-bit integer =====================================================================

void test_hal_intrin_uint8()
{
    DUMP_ENTRY(v_uint8);
    typedef v_uint8 R;
    TheTest<v_uint8>()
        .test_loadstore()
        .test_interleave()
        .test_expand()
        .test_expand_q()
        .test_addsub()
        .test_arithm_wrap()
        .test_mul()
        .test_mul_expand()
        .test_cmp()
        .test_logic()
        .test_dotprod_expand()
        .test_min_max()
        .test_absdiff()
        .test_reduce()
        .test_reduce_sad()
        .test_mask()
        .test_popcount()
        .test_pack<1>().test_pack<2>().test_pack<3>().test_pack<8>()
        .test_pack_u<1>().test_pack_u<2>().test_pack_u<3>().test_pack_u<8>()
        .test_pack_b()
        .test_unpack()
        .test_reverse()
        .test_extract<0>().test_extract<1>().test_extract<8>().test_extract<15>()
        .test_rotate<0>().test_rotate<1>().test_rotate<8>().test_rotate<15>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        //.test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
#if CV_SIMD_WIDTH == 32
        .test_pack<9>().test_pack<10>().test_pack<13>().test_pack<15>()
        .test_pack_u<9>().test_pack_u<10>().test_pack_u<13>().test_pack_u<15>()
        .test_extract<16>().test_extract<17>().test_extract<23>().test_extract<31>()
        .test_rotate<16>().test_rotate<17>().test_rotate<23>().test_rotate<31>()
#endif
        ;
}

void test_hal_intrin_int8()
{
    DUMP_ENTRY(v_int8);
    typedef v_int8 R;
    TheTest<v_int8>()
        .test_loadstore()
        .test_interleave()
        .test_expand()
        .test_expand_q()
        .test_addsub()
        .test_arithm_wrap()
        .test_mul()
        .test_mul_expand()
        .test_cmp()
        .test_logic()
        .test_dotprod_expand()
        .test_min_max()
        .test_absdiff()
        .test_absdiffs()
        .test_abs()
        .test_reduce()
        .test_reduce_sad()
        .test_mask()
        .test_popcount()
        .test_pack<1>().test_pack<2>().test_pack<3>().test_pack<8>()
        .test_unpack()
        .test_reverse()
        .test_extract<0>().test_extract<1>().test_extract<8>().test_extract<15>()
        .test_rotate<0>().test_rotate<1>().test_rotate<8>().test_rotate<15>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        //.test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
        ;
}

//============= 16-bit integer =====================================================================

void test_hal_intrin_uint16()
{
    DUMP_ENTRY(v_uint16);
    typedef v_uint16 R;
    TheTest<v_uint16>()
        .test_loadstore()
        .test_interleave()
        .test_expand()
        .test_addsub()
        .test_arithm_wrap()
        .test_mul()
        .test_mul_expand()
        .test_mul_hi()
        .test_cmp()
        .test_shift<1>()
        .test_shift<8>()
        .test_dotprod_expand()
        .test_logic()
        .test_min_max()
        .test_absdiff()
        .test_reduce()
        .test_reduce_sad()
        .test_mask()
        .test_popcount()
        .test_pack<1>().test_pack<2>().test_pack<7>().test_pack<16>()
        .test_pack_u<1>().test_pack_u<2>().test_pack_u<7>().test_pack_u<16>()
        .test_unpack()
        .test_reverse()
        .test_extract<0>().test_extract<1>().test_extract<4>().test_extract<7>()
        .test_rotate<0>().test_rotate<1>().test_rotate<4>().test_rotate<7>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        //.test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
        ;
}

void test_hal_intrin_int16()
{
    DUMP_ENTRY(v_int16);
    typedef v_int16 R;
    TheTest<v_int16>()
        .test_loadstore()
        .test_interleave()
        .test_expand()
        .test_addsub()
        .test_arithm_wrap()
        .test_mul()
        .test_mul_expand()
        .test_mul_hi()
        .test_cmp()
        .test_shift<1>()
        .test_shift<8>()
        .test_dotprod()
        .test_dotprod_expand()
        .test_logic()
        .test_min_max()
        .test_absdiff()
        .test_absdiffs()
        .test_abs()
        .test_reduce()
        .test_reduce_sad()
        .test_mask()
        .test_popcount()
        .test_pack<1>().test_pack<2>().test_pack<7>().test_pack<16>()
        .test_unpack()
        .test_reverse()
        .test_extract<0>().test_extract<1>().test_extract<4>().test_extract<7>()
        .test_rotate<0>().test_rotate<1>().test_rotate<4>().test_rotate<7>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        //.test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
        ;
}

//============= 32-bit integer =====================================================================

void test_hal_intrin_uint32()
{
    DUMP_ENTRY(v_uint32);
    typedef v_uint32 R;
    TheTest<v_uint32>()
        .test_loadstore()
        .test_interleave()
        .test_expand()
        .test_addsub()
        .test_mul()
        .test_mul_expand()
        .test_cmp()
        .test_shift<1>()
        .test_shift<8>()
        .test_logic()
        .test_min_max()
        .test_absdiff()
        .test_reduce()
        .test_reduce_sad()
        .test_mask()
        .test_popcount()
        .test_pack<1>().test_pack<2>().test_pack<15>().test_pack<32>()
        .test_unpack()
        .test_reverse()
        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        .test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
        .test_transpose()
        ;
}

void test_hal_intrin_int32()
{
    DUMP_ENTRY(v_int32);
    typedef v_int32 R;
    TheTest<v_int32>()
        .test_loadstore()
        .test_interleave()
        .test_expand()
        .test_addsub()
        .test_mul()
        .test_abs()
        .test_cmp()
        .test_popcount()
        .test_shift<1>().test_shift<8>()
        .test_dotprod()
        .test_dotprod_expand_f64()
        .test_logic()
        .test_min_max()
        .test_absdiff()
        .test_reduce()
        .test_reduce_sad()
        .test_mask()
        .test_pack<1>().test_pack<2>().test_pack<15>().test_pack<32>()
        .test_unpack()
        .test_reverse()
        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        .test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
        .test_float_cvt32()
        .test_float_cvt64()
        .test_transpose()
        ;
}

//============= 64-bit integer =====================================================================

void test_hal_intrin_uint64()
{
    DUMP_ENTRY(v_uint64);
    typedef v_uint64 R;
    TheTest<v_uint64>()
        .test_loadstore()
        .test_addsub()
#if CV_SIMD_64F
        .test_cmp64()
#endif
        .test_shift<1>().test_shift<8>()
        .test_logic()
        .test_reverse()
        .test_extract<0>().test_extract<1>()
        .test_rotate<0>().test_rotate<1>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        //.test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
        ;
}

void test_hal_intrin_int64()
{
    DUMP_ENTRY(v_int64);
    typedef v_int64 R;
    TheTest<v_int64>()
        .test_loadstore()
        .test_addsub()
#if CV_SIMD_64F
        .test_cmp64()
#endif
        .test_shift<1>().test_shift<8>()
        .test_logic()
        .test_reverse()
        .test_extract<0>().test_extract<1>()
        .test_rotate<0>().test_rotate<1>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        //.test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
        .test_cvt64_double()
        ;
}

//============= Floating point =====================================================================
void test_hal_intrin_float32()
{
    DUMP_ENTRY(v_float32);
    typedef v_float32 R;
    TheTest<v_float32>()
        .test_loadstore()
        .test_interleave()
        .test_interleave_2channel()
        .test_addsub()
        .test_mul()
        .test_div()
        .test_cmp()
        .test_sqrt_abs()
        .test_min_max()
        .test_float_absdiff()
        .test_reduce()
        .test_reduce_sad()
        .test_mask()
        .test_unpack()
        .test_float_math()
        .test_float_cvt64()
        .test_matmul()
        .test_transpose()
        .test_reduce_sum4()
        .test_reverse()
        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        .test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
#if CV_SIMD_WIDTH == 32
        .test_extract<4>().test_extract<5>().test_extract<6>().test_extract<7>()
        .test_rotate<4>().test_rotate<5>().test_rotate<6>().test_rotate<7>()
#endif
        ;
}

void test_hal_intrin_float64()
{
    DUMP_ENTRY(v_float64);
#if CV_SIMD_64F
    typedef v_float64 R;
    TheTest<v_float64>()
        .test_loadstore()
        .test_addsub()
        .test_mul()
        .test_div()
        .test_cmp()
        .test_sqrt_abs()
        .test_min_max()
        .test_float_absdiff()
        .test_mask()
        .test_unpack()
        .test_float_math()
        .test_float_cvt32()
        .test_reverse()
        .test_extract<0>().test_extract<1>()
        .test_rotate<0>().test_rotate<1>()
        .test_extract_n<0>().test_extract_n<1>().test_extract_n<R::nlanes - 1>()
        //.test_broadcast_element<0>().test_broadcast_element<1>().test_broadcast_element<R::nlanes - 1>()
#if CV_SIMD_WIDTH == 32
        .test_extract<2>().test_extract<3>()
        .test_rotate<2>().test_rotate<3>()
#endif
        ;

#endif
}

void test_hal_intrin_float16()
{
    DUMP_ENTRY(v_float16);
#if CV_FP16
    TheTest<v_float32>()
        .test_loadstore_fp16_f32()
#if CV_SIMD_FP16
        .test_loadstore_fp16()
        .test_float_cvt_fp16()
#endif
        ;
#else
    std::cout << "SKIP: CV_FP16 is not available" << std::endl;
#endif
}

/*#if defined(CV_CPU_DISPATCH_MODE_FP16) && CV_CPU_DISPATCH_MODE == FP16
void test_hal_intrin_float16()
{
    TheTest<v_float16>()
        .test_loadstore_fp16()
        .test_float_cvt_fp16()
        ;
}
#endif*/

#endif //CV_CPU_OPTIMIZATION_DECLARATIONS_ONLY

//CV_CPU_OPTIMIZATION_NAMESPACE_END
//}}} // namespace