simd_bit.h

/* SPDX-License-Identifier: LGPL-3.0-or-later */
/* Copyright © 2022–2024 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
 *                       Matthias Kretz <m.kretz@gsi.de>
 */
 
#ifndef VIR_SIMD_BIT_H
#define VIR_SIMD_BIT_H
 
#include "simd.h"
#include "detail.h"
#include <type_traits>
 
namespace vir
{
  template <typename To, typename From>
    constexpr
    std::enable_if_t<std::conjunction_v<std::integral_constant<bool, sizeof(To) == sizeof(From)>,
                                        meta::is_simd_or_mask<To>,
                                        meta::is_simd_or_mask<From>>, To>
    simd_bit_cast(const From& x)
    {
      if constexpr (std::is_trivially_copyable_v<From> and std::is_trivially_copyable_v<To>)
        return detail::bit_cast<To>(x);
#if VIR_GLIBCXX_STDX_SIMD and _GLIBCXX_RELEASE >= 12
      else
        return std::experimental::__proposed::simd_bit_cast<To>(x);
#endif
    }
}
 
#endif // VIR_SIMD_BIT_H