Function countr_zero

src/fl/stl/bitset.h:38–40

template<typename IntType>
inline fl::u8 countr_zero(IntType value) FL_NOEXCEPT {
    return static_cast<fl::u8>(__builtin_ctz(value));
}

/// A simple fixed-size Bitset implementation similar to std::Bitset.
template <fl::u32 N> class bitset_fixed {