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/*
* File: is_same.hpp
* Purpose: Equivalence header.
* Author: Amlal El Mahrouss (amlal@nekernel.org)
* Copyright 2025, Amlal El Mahrouss, licensed under the Boost Software License.
*/
#ifndef __OCL_CORE_IS_SAME
#define __OCL_CORE_IS_SAME
#include <ocl/detail/config.hpp>
/// @brief OCL equivalence namespace.
namespace ocl
{
template <typename T>
struct basic_hash final
{
using result_type = typename T::result_type;
using type = T;
/// @brief hash from T's result_type.
static result_type hash()
{
return T{}.hash();
}
};
template <typename T, typename U>
struct is_same
{
using left_type = T;
using right_type = T;
static constexpr bool value = false;
};
template <typename T>
struct is_same<T, T>
{
static constexpr bool value = true;
};
template <typename T, typename U>
struct is_not_same
{
using left_type = T;
using right_type = T;
static constexpr bool value = true;
};
template <typename T>
struct is_not_same<T, T>
{
static constexpr bool value = false;
};
template <typename T>
struct equiv_is_int8 final
{
using result_type = bool;
constexpr result_type hash()
{
return sizeof(T) == 1;
}
};
template <typename T>
struct equiv_not_int8 final
{
using result_type = bool;
constexpr result_type hash()
{
return sizeof(T) > 1;
}
};
template <typename T>
struct equiv_is_real final
{
using result_type = bool;
constexpr result_type hash()
{
return sizeof(T) >= 4;
}
};
template <typename L, typename R>
struct equiv_is final
{
using result_type = bool;
using left_type = L;
using right_type = R;
constexpr result_type hash()
{
return false;
}
};
template <typename L>
struct equiv_is<L, L> final
{
using result_type = bool;
using left_type = L;
using right_type = L;
constexpr result_type hash()
{
return true;
}
};
} // namespace ocl
#endif
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