Searched refs:kLog2PI (Results 1 – 5 of 5) sorted by relevance
51 constexpr double kLog2PI = 1.83787706640934548356; in StirlingLogFactorial() local54 return n * logn - n + 0.5 * (kLog2PI + logn) + (1.0 / 12.0) * ninv - in StirlingLogFactorial()