Method sqrt

src/fl/math/fixed_point/base.h:209–211

    }

    static constexpr FASTLED_FORCE_INLINE Derived sqrt(Derived x) {
        return x.mValue <= 0 ? Derived() : sqrt_impl(x, fl::bool_constant<traits::USE_ISQRT32>());
    }

  private:
    // sqrt implementation for i16 types (use isqrt32)