#pragma once
#include "constant_integral.hip.hpp"
#include "Sequence.hip.hpp"
#include "Array.hip.hpp"
#include "functional.hip.hpp"

__device__ unsigned get_thread_local_1d_id() { return threadIdx.x; }

__device__ unsigned get_block_1d_id() { return blockIdx.x; }

template <class T1, class T2>
struct is_same
{
    static const bool value = false;
};

template <class T>
struct is_same<T, T>
{
    static const bool value = true;
};

template <class T, unsigned N>
struct vector_type
{
};

template <>
struct vector_type<float, 1>
{
    using type = float;
};

template <>
struct vector_type<float, 2>
{
    using type = float2;
};

template <>
struct vector_type<float, 4>
{
    using type = float4;
};

#if 0
template <>
struct vector_type<half_float::half, 1>
{
    using type = half_float::half;
};

template <>
struct vector_type<half_float::half, 2>
{
    using type = float;
};

template <>
struct vector_type<half_float::half, 4>
{
    using type = float2;
};

template <>
struct vector_type<half_float::half, 8>
{
    using type = float4;
};
#endif

#if 1
template <>
struct vector_type<half, 1>
{
    using type = half;
};

template <>
struct vector_type<half, 2>
{
    using type = half2;
};

template <>
struct vector_type<half, 4>
{
    using type = float2;
};

template <>
struct vector_type<half, 8>
{
    using type = float4;
};
#endif

template <typename T>
__host__ __device__ constexpr T max(T a, T b)
{
    return a > b ? a : b;
}

template <typename T>
__host__ __device__ constexpr T min(T a, T b)
{
    return a < b ? a : b;
}

__host__ __device__ constexpr unsigned integer_divide_ceil(unsigned a, unsigned b)
{
    return (a + b - 1) / b;
}