align.hpp

Go to the documentation of this file.

 
#ifndef EAGINE_MEMORY_ALIGN_HPP
#define EAGINE_MEMORY_ALIGN_HPP
 
#include "../type_identity.hpp"
#include "../types.hpp"
 
namespace eagine::memory {
//------------------------------------------------------------------------------
static constexpr auto
misalignment(span_size_t addr, span_size_t alignment) noexcept -> span_size_t {
    return addr % alignment;
}
//------------------------------------------------------------------------------
static constexpr auto misalignment(std::nullptr_t, span_size_t) noexcept
  -> span_size_t {
    return 0;
}
//------------------------------------------------------------------------------
static constexpr auto
is_aligned_to(span_size_t addr, span_size_t algn) noexcept {
    return misalignment(addr, algn) == 0;
}
//------------------------------------------------------------------------------
static constexpr auto is_aligned_to(std::nullptr_t, span_size_t) noexcept {
    return true;
}
//------------------------------------------------------------------------------
template <typename T>
static constexpr auto
is_aligned_as(span_size_t addr, type_identity<T> = {}) noexcept {
    return is_aligned_to(addr, span_align_of<T>());
}
//------------------------------------------------------------------------------
} // namespace eagine::memory
 
#endif // EAGINE_MEMORY_ALIGN_HPP