math-gammaln
Natural logarithm of the gamma function.
Natural logarithm of the gamma function.
Signum function.
Gamma function.
Riemann Zeta function.
Signum function.
Digamma function.
Beta function.
Natural logarithm of the beta function.
Gamma function.
Compute the ratio of two gamma functions.
Calculate the Lanczos sum for the approximation of the gamma function.
Calculate a scaled Lanczos sum for the approximation of the gamma function.
Compute gamma(x+1) - 1.
Incomplete gamma function.
Inverse incomplete gamma function.
Natural logarithm of the gamma function.
Sign of the gamma function.
Incomplete beta function and its first derivative.
Inverse incomplete beta function.
Digamma function.