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#pragma once

#ifndef OPENCV_CUDEV_BLOCK_DYNAMIC_SMEM_HPP
#define OPENCV_CUDEV_BLOCK_DYNAMIC_SMEM_HPP

#include "../common.hpp"

namespace cv { namespace cudev {

//! @addtogroup cudev
//! @{

template <class T> struct DynamicSharedMem
{
    __device__ __forceinline__ operator T*()
    {
        extern __shared__ int __smem[];
        return (T*) __smem;
    }

    __device__ __forceinline__ operator const T*() const
    {
        extern __shared__ int __smem[];
        return (T*) __smem;
    }
};

// specialize for double to avoid unaligned memory access compile errors
template <> struct DynamicSharedMem<double>
{
    __device__ __forceinline__ operator double*()
    {
        extern __shared__ double __smem_d[];
        return (double*) __smem_d;
    }

    __device__ __forceinline__ operator const double*() const
    {
        extern __shared__ double __smem_d[];
        return (double*) __smem_d;
    }
};

//! @}

}}

#endif
