MDEV-19212: Replace macros with type-safe inline functions
The regression that was reported in MDEV-19212 occurred due to use of macros that did not ensure that the arguments have compatible types. ut_2pow_remainder(), ut_2pow_round(), ut_calc_align(): Define as inline function templates. UT_CALC_ALIGN(): Define as a macro, because this is used in compile_time_assert(). Only starting with C++11 (MariaDB 10.4) we could define the inline functions as constexpr.
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