alignment_cast.h

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/* Copyright (C) 2016 Olly Betts
 *
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 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
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 *
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#ifndef XAPIAN_INCLUDED_ALIGNMENT_CAST_H
#define XAPIAN_INCLUDED_ALIGNMENT_CAST_H

#include <type_traits>

template<typename T, typename U>
typename std::enable_if<std::is_const<typename std::remove_pointer<U>::type>::value, T>::type
alignment_cast(U ptr)
{
    return static_cast<T>(static_cast<const void*>(ptr));
}

template<typename T, typename U>
typename std::enable_if<!std::is_const<typename std::remove_pointer<U>::type>::value, T>::type
alignment_cast(U ptr)
{
    return static_cast<T>(static_cast<void*>(ptr));
}

#endif /* XAPIAN_INCLUDED_ALIGNMENT_CAST_H */