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C++ af::dim4类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中af::dim4的典型用法代码示例。如果您正苦于以下问题:C++ dim4类的具体用法?C++ dim4怎么用?C++ dim4使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



在下文中一共展示了dim4类的19个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: weightedMeanAllTest

void weightedMeanAllTest(af::dim4 dims)
{
    typedef typename meanOutType<T>::type outType;

    if (noDoubleTests<T>()) return;
    if (noDoubleTests<outType>()) return;
    if (noDoubleTests<wtsType>()) return;

    using af::array;
    using af::mean;

    std::srand(std::time(0));

    vector<T> data(dims.elements());
    vector<wtsType> wts(dims.elements());
    std::generate(data.begin(), data.end(), random<T>);
    std::generate(wts.begin(), wts.end(), random<wtsType>);

    outType wtdSum = outType(0);
    wtsType wtsSum = wtsType(0);

    for(int i = 0; i < (int)data.size(); i++) {
        wtdSum = wtdSum + data[i]*wts[i];
        wtsSum = wtsSum + wts[i];
    }

    outType gold = wtdSum / wtsSum;

    array a(dims, &(data.front()));
    array w(dims, &(wts.front()));
    outType output = mean<outType>(a, w);

    ASSERT_NEAR(::real(output), ::real(gold), 1.0e-2);
    ASSERT_NEAR(::imag(output), ::imag(gold), 1.0e-2);
}
开发者ID:FilipeMaia,项目名称:arrayfire,代码行数:35,代码来源:mean.cpp


示例2: af_copy_array

//Strong Exception Guarantee
af_err af_copy_array(af_array *out, const af_array in)
{
    ArrayInfo info = getInfo(in);
    const unsigned ndims = info.ndims();
    const af::dim4 dims = info.dims();
    const af_dtype type = info.getType();

    af_err ret = AF_ERR_ARG;

    ret = af_create_handle(out, ndims, dims.get(), type);
    if(ret != AF_SUCCESS) {
        return ret;
    }

    try {
        switch(type) {
        case f32:   copyArray<float   >(out, in); break;
        case c32:   copyArray<cfloat  >(out, in); break;
        case f64:   copyArray<double  >(out, in); break;
        case c64:   copyArray<cdouble >(out, in); break;
        case b8:    copyArray<char    >(out, in); break;
        case s32:   copyArray<int     >(out, in); break;
        case u32:   copyArray<unsigned>(out, in); break;
        case u8:    copyArray<uchar   >(out, in); break;
        default:    ret = AF_ERR_NOT_SUPPORTED;   break;
        }
    }
    CATCHALL
    return ret;
}
开发者ID:JianpingCAI,项目名称:arrayfire,代码行数:31,代码来源:data.cpp


示例3: resize

    Array<T> resize(const Array<T> &in, const dim_type odim0, const dim_type odim1,
                    const af_interp_type method)
    {
        if ((std::is_same<T, double>::value || std::is_same<T, cdouble>::value) &&
            !isDoubleSupported(getActiveDeviceId())) {
            OPENCL_NOT_SUPPORTED();
        }
        const af::dim4 iDims = in.dims();
        af::dim4 oDims(odim0, odim1, iDims[2], iDims[3]);

        if(iDims.elements() == 0 || oDims.elements() == 0) {
            throw std::runtime_error("Elements is 0");
        }

        Array<T> out = createEmptyArray<T>(oDims);

        switch(method) {
            case AF_INTERP_NEAREST:
                kernel::resize<T, AF_INTERP_NEAREST> (out, in);
                break;
            case AF_INTERP_BILINEAR:
                kernel::resize<T, AF_INTERP_BILINEAR>(out, in);
                break;
            default:
                break;
        }
        return out;
    }
开发者ID:EmergentOrder,项目名称:arrayfire,代码行数:28,代码来源:resize.cpp


示例4: channel_split

//  Split a MxNx3 image into 3 separate channel matrices.
//  Produce 3 channels if needed
static af_err channel_split(const af_array rgb, const af::dim4 &dims,
                            af_array *outr, af_array *outg, af_array *outb, af_array *outa)
{
    try {
        af_seq idx[4][3] = {{af_span, af_span, {0, 0, 1}},
                            {af_span, af_span, {1, 1, 1}},
                            {af_span, af_span, {2, 2, 1}},
                            {af_span, af_span, {3, 3, 1}}
                           };

        if (dims[2] == 4) {
            AF_CHECK(af_index(outr, rgb, dims.ndims(), idx[0]));
            AF_CHECK(af_index(outg, rgb, dims.ndims(), idx[1]));
            AF_CHECK(af_index(outb, rgb, dims.ndims(), idx[2]));
            AF_CHECK(af_index(outa, rgb, dims.ndims(), idx[3]));
        } else if (dims[2] == 3) {
            AF_CHECK(af_index(outr, rgb, dims.ndims(), idx[0]));
            AF_CHECK(af_index(outg, rgb, dims.ndims(), idx[1]));
            AF_CHECK(af_index(outb, rgb, dims.ndims(), idx[2]));
        } else {
            AF_CHECK(af_index(outr, rgb, dims.ndims(), idx[0]));
        }
    } CATCHALL;
    return AF_SUCCESS;
}
开发者ID:rotorliu,项目名称:arrayfire,代码行数:27,代码来源:imageio.cpp


示例5: diff

    static Array<T> diff(const Array<T> &in, const int dim)
    {
        const af::dim4 iDims = in.dims();
        af::dim4 oDims = iDims;
        oDims[dim] -= (isDiff2 + 1);

        if(iDims.elements() == 0 || oDims.elements() == 0) {
            throw std::runtime_error("Elements are 0");
        }

        Array<T> out = createEmptyArray<T>(oDims);

        switch (dim) {

            case (0):    kernel::diff<T, 0, isDiff2>(out, in, in.ndims());
                         break;

            case (1):    kernel::diff<T, 1, isDiff2>(out, in, in.ndims());
                         break;

            case (2):    kernel::diff<T, 2, isDiff2>(out, in, in.ndims());
                         break;

            case (3):    kernel::diff<T, 3, isDiff2>(out, in, in.ndims());
                         break;
        }

        return out;
    }
开发者ID:rotorliu,项目名称:arrayfire,代码行数:29,代码来源:diff.cpp


示例6: randnTest

void randnTest(af::dim4 &dims)
{
    if (noDoubleTests<T>()) return;

    af_array outArray = 0;
    ASSERT_EQ(AF_SUCCESS, af_randn(&outArray, dims.ndims(), dims.get(), (af_dtype) af::dtype_traits<T>::af_type));
    if(outArray != 0) af_destroy_array(outArray);
}
开发者ID:PenguinHeart,项目名称:arrayfire,代码行数:8,代码来源:random.cpp


示例7:

void randnTest<unsigned char>(af::dim4 &dims)
{
    if (noDoubleTests<unsigned char>()) return;

    af_array outArray = 0;
    ASSERT_EQ(AF_ERR_NOT_SUPPORTED, af_randn(&outArray, dims.ndims(), dims.get(), (af_dtype) af::dtype_traits<unsigned char>::af_type));
    if(outArray != 0) af_destroy_array(outArray);
}
开发者ID:PenguinHeart,项目名称:arrayfire,代码行数:8,代码来源:random.cpp


示例8: info

    Array<T>::Array(af::dim4 dims, const T * const in_data, bool is_device) :
        info(getActiveDeviceId(), dims, af::dim4(0,0,0,0), calcStrides(dims), (af_dtype)dtype_traits<T>::af_type),
        data((is_device ? (T *)in_data : memAlloc<T>(dims.elements())), memFree<T>),
        data_dims(dims),
        node(), offset(0), ready(true), owner(true)
    {
#if __cplusplus > 199711L
        static_assert(std::is_standard_layout<Array<T>>::value, "Array<T> must be a standard layout type");
        static_assert(offsetof(Array<T>, info) == 0, "Array<T>::info must be the first member variable of Array<T>");
#endif
        if (!is_device) {
            CUDA_CHECK(cudaMemcpy(data.get(), in_data, dims.elements() * sizeof(T), cudaMemcpyHostToDevice));
        }
    }
开发者ID:rotorliu,项目名称:arrayfire,代码行数:14,代码来源:Array.cpp


示例9: af_tile

af_err af_tile(af_array *out, const af_array in, const af::dim4 &tileDims)
{
    try {
        ArrayInfo info = getInfo(in);
        af_dtype type = info.getType();

        if(info.ndims() == 0) {
            return af_retain_array(out, in);
        }
        DIM_ASSERT(1, info.dims().elements() > 0);
        DIM_ASSERT(2, tileDims.elements() > 0);

        af_array output;

        switch(type) {
            case f32: output = tile<float  >(in, tileDims);  break;
            case c32: output = tile<cfloat >(in, tileDims);  break;
            case f64: output = tile<double >(in, tileDims);  break;
            case c64: output = tile<cdouble>(in, tileDims);  break;
            case b8:  output = tile<char   >(in, tileDims);  break;
            case s32: output = tile<int    >(in, tileDims);  break;
            case u32: output = tile<uint   >(in, tileDims);  break;
            case s64: output = tile<intl   >(in, tileDims);  break;
            case u64: output = tile<uintl  >(in, tileDims);  break;
            case s16: output = tile<short  >(in, tileDims);  break;
            case u16: output = tile<ushort >(in, tileDims);  break;
            case u8:  output = tile<uchar  >(in, tileDims);  break;
            default:  TYPE_ERROR(1, type);
        }
        std::swap(*out,output);
    }
    CATCHALL;

    return AF_SUCCESS;
}
开发者ID:victorv,项目名称:arrayfire,代码行数:35,代码来源:tile.cpp


示例10: af_scale

af_err af_scale(af_array *out, const af_array in, const float scale0, const float scale1,
                const dim_t odim0, const dim_t odim1, const af_interp_type method)
{
    try {
        ArrayInfo i_info = getInfo(in);
        af::dim4 idims = i_info.dims();

        dim_t _odim0 = odim0, _odim1 = odim1;
        float sx, sy;

        if(_odim0 == 0 || _odim1 == 0) {

            DIM_ASSERT(2, scale0 != 0);
            DIM_ASSERT(3, scale1 != 0);

            sx = 1.f / scale0, sy = 1.f / scale1;
            _odim0 = idims[0] / sx;
            _odim1 = idims[1] / sy;

        } else if (scale0 == 0 || scale1 == 0) {

            DIM_ASSERT(4, odim0 != 0);
            DIM_ASSERT(5, odim1 != 0);

            sx = idims[0] / (float)_odim0;
            sy = idims[1] / (float)_odim1;

        } else {

            sx = 1.f / scale0, sy = 1.f / scale1;
        }

        static float trans_mat[6] = {1, 0, 0,
                                     0, 1, 0};
        trans_mat[0] = sx;
        trans_mat[4] = sy;

        static af::dim4 tdims(3, 2, 1, 1);
        af_array t = 0;
        AF_CHECK(af_create_array(&t, trans_mat, tdims.ndims(), tdims.get(), f32));
        AF_CHECK(af_transform(out, in, t, _odim0, _odim1, method, true));
        AF_CHECK(af_release_array(t));
    }
    CATCHALL;
    return AF_SUCCESS;
}
开发者ID:hxiaox,项目名称:arrayfire,代码行数:46,代码来源:transform.cpp


示例11: tile

    Array<T> tile(const Array<T> &in, const af::dim4 &tileDims)
    {
        const af::dim4 iDims = in.dims();
        af::dim4 oDims = iDims;
        oDims *= tileDims;

        if(iDims.elements() == 0 || oDims.elements() == 0) {
            throw std::runtime_error("Elements are 0");
        }

        Array<T> out = createEmptyArray<T>(oDims);

        T* outPtr = out.get();
        const T* inPtr = in.get();

        const af::dim4 ist = in.strides();
        const af::dim4 ost = out.strides();

        for(dim_t ow = 0; ow < oDims[3]; ow++) {
            const dim_t iw = ow % iDims[3];
            const dim_t iW = iw * ist[3];
            const dim_t oW = ow * ost[3];
            for(dim_t oz = 0; oz < oDims[2]; oz++) {
                const dim_t iz = oz % iDims[2];
                const dim_t iZW = iW + iz * ist[2];
                const dim_t oZW = oW + oz * ost[2];
                for(dim_t oy = 0; oy < oDims[1]; oy++) {
                    const dim_t iy = oy % iDims[1];
                    const dim_t iYZW = iZW + iy * ist[1];
                    const dim_t oYZW = oZW + oy * ost[1];
                    for(dim_t ox = 0; ox < oDims[0]; ox++) {
                        const dim_t ix = ox % iDims[0];
                        const dim_t iMem = iYZW + ix;
                        const dim_t oMem = oYZW + ox;
                        outPtr[oMem] = inPtr[iMem];
                    }
                }
            }
        }

        return out;
    }
开发者ID:hxiaox,项目名称:arrayfire,代码行数:42,代码来源:tile.cpp


示例12: info

    Array<T>::Array(af::dim4 dims, const T * const in_data, bool is_device, bool copy_device) :
        info(getActiveDeviceId(), dims, 0, calcStrides(dims), (af_dtype)dtype_traits<T>::af_type),
        data(((is_device & !copy_device) ? const_cast<T*>(in_data) : memAlloc<T>(dims.elements()).release()), memFree<T>),
        data_dims(dims),
        node(bufferNodePtr<T>()), ready(true), owner(true)
    {
#if __cplusplus > 199711L
        static_assert(std::is_standard_layout<Array<T>>::value, "Array<T> must be a standard layout type");
        static_assert(offsetof(Array<T>, info) == 0, "Array<T>::info must be the first member variable of Array<T>");
#endif
        if (!is_device) {
            CUDA_CHECK(cudaMemcpyAsync(data.get(), in_data, dims.elements() * sizeof(T),
                                       cudaMemcpyHostToDevice, cuda::getActiveStream()));
            CUDA_CHECK(cudaStreamSynchronize(cuda::getActiveStream()));
        } else if (copy_device) {
            CUDA_CHECK(cudaMemcpyAsync(data.get(), in_data, dims.elements() * sizeof(T),
                                       cudaMemcpyDeviceToDevice, cuda::getActiveStream()));
            CUDA_CHECK(cudaStreamSynchronize(cuda::getActiveStream()));
        }
    }
开发者ID:FloopCZ,项目名称:arrayfire,代码行数:20,代码来源:Array.cpp


示例13: af_translate

af_err af_translate(af_array *out, const af_array in, const float trans0, const float trans1,
                    const dim_t odim0, const dim_t odim1, const af_interp_type method)
{

    try {
        static float trans_mat[6] = {1, 0, 0,
                                     0, 1, 0};
        trans_mat[2] = trans0;
        trans_mat[5] = trans1;

        static af::dim4 tdims(3, 2, 1, 1);
        af_array t = 0;

        AF_CHECK(af_create_array(&t, trans_mat, tdims.ndims(), tdims.get(), f32));
        AF_CHECK(af_transform(out, in, t, odim0, odim1, method, true));
        AF_CHECK(af_release_array(t));
    }
    CATCHALL;

    return AF_SUCCESS;
}
开发者ID:hxiaox,项目名称:arrayfire,代码行数:21,代码来源:transform.cpp


示例14: testCPPMean

void testCPPMean(T const_value, af::dim4 dims)
{
    typedef typename meanOutType<T>::type outType;
    if (noDoubleTests<T>()) return;

    using af::array;
    using af::mean;

    vector<T> hundred(dims.elements(), const_value);

    outType gold = outType(0);
    //for(auto i:hundred) gold += i;
    for(int i = 0; i < (int)hundred.size(); i++) {
        gold += hundred[i];
    }
    gold /= dims.elements();

    array a(dims, &(hundred.front()));
    outType output = mean<outType>(a);

    ASSERT_NEAR(::real(output), ::real(gold), 1.0e-3);
    ASSERT_NEAR(::imag(output), ::imag(gold), 1.0e-3);
}
开发者ID:EmergentOrder,项目名称:arrayfire,代码行数:23,代码来源:mean.cpp


示例15: af_skew

af_err af_skew(af_array *out, const af_array in, const float skew0, const float skew1,
               const dim_t odim0, const dim_t odim1, const af_interp_type method,
               const bool inverse)
{
    try {
        float tx = std::tan(skew0);
        float ty = std::tan(skew1);

        static float trans_mat[6] = {1, 0, 0,
                                     0, 1, 0};
        trans_mat[1] = ty;
        trans_mat[3] = tx;

        if(inverse) {
            if(tx == 0 || ty == 0) {
                trans_mat[1] = tx;
                trans_mat[3] = ty;
            } else {
                //calc_tranform_inverse(trans_mat);
                //short cut of calc_transform_inverse
                float d = 1.0f / (1.0f - tx * ty);
                trans_mat[0] = d;
                trans_mat[1] = ty * d;
                trans_mat[3] = tx * d;
                trans_mat[4] = d;
            }
        }
        static af::dim4 tdims(3, 2, 1, 1);
        af_array t = 0;
        AF_CHECK(af_create_array(&t, trans_mat, tdims.ndims(), tdims.get(), f32));
        AF_CHECK(af_transform(out, in, t, odim0, odim1, method, true));
        AF_CHECK(af_release_array(t));
    }
    CATCHALL;

    return AF_SUCCESS;
}
开发者ID:hxiaox,项目名称:arrayfire,代码行数:37,代码来源:transform.cpp


示例16: testCPPVar

void testCPPVar(T const_value, af::dim4 dims)
{
    typedef typename varOutType<T>::type outType;
    if (noDoubleTests<T>()) return;
    if (noDoubleTests<outType>()) return;

    using af::array;
    using af::var;

    vector<T> hundred(dims.elements(), const_value);

    outType gold = outType(0);

    array a(dims, &(hundred.front()));
    outType output = var<outType>(a, false);

    ASSERT_NEAR(::real(output), ::real(gold), 1.0e-3);
    ASSERT_NEAR(::imag(output), ::imag(gold), 1.0e-3);

    output = var<outType>(a, true);

    ASSERT_NEAR(::real(output), ::real(gold), 1.0e-3);
    ASSERT_NEAR(::imag(output), ::imag(gold), 1.0e-3);

    gold = outType(2.5);
    outType tmp[] = { outType(0), outType(1), outType(2), outType(3),
        outType(4) };
    array b(5, tmp);
    output = var<outType>(b, false);

    ASSERT_NEAR(::real(output), ::real(gold), 1.0e-3);
    ASSERT_NEAR(::imag(output), ::imag(gold), 1.0e-3);

    gold = outType(2);
    output = var<outType>(b, true);

    ASSERT_NEAR(::real(output), ::real(gold), 1.0e-3);
    ASSERT_NEAR(::imag(output), ::imag(gold), 1.0e-3);
}
开发者ID:PierreBizouard,项目名称:arrayfire,代码行数:39,代码来源:var.cpp


示例17: info

 Array<T>::Array(af::dim4 dims) :
     info(getActiveDeviceId(), dims, af::dim4(0,0,0,0), calcStrides(dims), (af_dtype)dtype_traits<T>::af_type),
     data(memAlloc<T>(dims.elements()), memFree<T>), data_dims(dims),
     node(), offset(0), ready(true), owner(true)
 {}
开发者ID:hxiaox,项目名称:arrayfire,代码行数:5,代码来源:Array.cpp


示例18: ndims

 size_t ndims() const                { return dim_size.ndims();      }
开发者ID:PierreBizouard,项目名称:arrayfire,代码行数:1,代码来源:ArrayInfo.hpp


示例19: elements

 size_t elements() const             { return dim_size.elements();   }
开发者ID:PierreBizouard,项目名称:arrayfire,代码行数:1,代码来源:ArrayInfo.hpp



注:本文中的af::dim4类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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