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#pragma once
#include "src/cuda/utils.cuh"

namespace megdnn {
namespace cuda {
namespace convolution {

struct PerChannelBiasVisitor {
    const int32_t* __restrict__ bias;
#if MEGDNN_CC_CUDA
    __host__ __device__ __forceinline__ void move(int, int ch, int, int) { bias += ch; }
    __host__ __device__ __forceinline__ float4 at(int, int ch, int, int) {
        int ix = *(bias + ch);
        int iy = *(bias + ch + 1);
        int iz = *(bias + ch + 2);
        int iw = *(bias + ch + 3);
        return ::make_float4(
                static_cast<float>(ix), static_cast<float>(iy), static_cast<float>(iz),
                static_cast<float>(iw));
    }
    __host__ __device__ __forceinline__ float4 at(int, int ch, int) {
        int ix = *(bias + ch);
        int iy = *(bias + ch + 1);
        int iz = *(bias + ch + 2);
        int iw = *(bias + ch + 3);
        return ::make_float4(
                static_cast<float>(ix), static_cast<float>(iy), static_cast<float>(iz),
                static_cast<float>(iw));
    }
#endif
};

}  // namespace convolution
}  // namespace cuda
}  // namespace megdnn

// vim: ft=cpp syntax=cuda.doxygen foldmethod=marker foldmarker=f{{{,f}}}
