alignedbase.h

/*  This file is part of the Vc library. {{{
Copyright © 2015 Matthias Kretz <kretz@kde.org>

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
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      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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}}}*/

#ifndef VC_COMMON_ALIGNEDBASE_H_
#define VC_COMMON_ALIGNEDBASE_H_

#include "types.h"
#include "macros.h"

namespace Vc_VERSIONED_NAMESPACE
{
namespace Detail
{
template <typename T> constexpr T max(T a) { return a; }
template <typename T, typename... Ts> constexpr T max(T a, T b, Ts... rest)
{
    return a > b ? max(a, rest...) : max(b, rest...);
}
}  // namespace Detail
namespace Common
{
template <std::size_t> Vc_INTRINSIC void *aligned_malloc(std::size_t);
Vc_ALWAYS_INLINE void free(void *);
}  // namespace Common

template <std::size_t Alignment> struct alignas(Alignment) AlignedBase
{
    Vc_FREE_STORE_OPERATORS_ALIGNED(Alignment);
};

using VectorAlignedBase = AlignedBase<
    Detail::max(alignof(Vector<float>), alignof(Vector<double>), alignof(Vector<ullong>),
                alignof(Vector<llong>), alignof(Vector<ulong>), alignof(Vector<long>),
                alignof(Vector<uint>), alignof(Vector<int>), alignof(Vector<ushort>),
                alignof(Vector<short>), alignof(Vector<uchar>), alignof(Vector<schar>))>;

template <typename V> using VectorAlignedBaseT = AlignedBase<alignof(V)>;

using MemoryAlignedBase = AlignedBase<
    Detail::max(Vector<float>::MemoryAlignment, Vector<double>::MemoryAlignment,
                Vector<ullong>::MemoryAlignment, Vector<llong>::MemoryAlignment,
                Vector<ulong>::MemoryAlignment, Vector<long>::MemoryAlignment,
                Vector<uint>::MemoryAlignment, Vector<int>::MemoryAlignment,
                Vector<ushort>::MemoryAlignment, Vector<short>::MemoryAlignment,
                Vector<uchar>::MemoryAlignment, Vector<schar>::MemoryAlignment)>;

template <typename V> using MemoryAlignedBaseT = AlignedBase<V::MemoryAlignment>;
}

#endif  // VC_COMMON_ALIGNEDBASE_H_

// vim: foldmethod=marker