Beta-binomial second-order derivative with respect to its theta-parameter (twice); for internal use by C++, accounting for numerical precision problems via increased memory usage (number of bits per number)

Beta-binomial second-order derivative with respect to its theta-parameter (twice); for internal use by C++, accounting for numerical precision problems via increased memory usage (number of bits per number)

GradThetaTheta_cppi_MP(M, N, PI, THETA, NecPres)