Incomplete beta function.

Polygamma function.

Inverse incomplete gamma function.

Incomplete beta function and its first derivative.

Trigamma function.

Calculate a scaled Lanczos sum for the approximation of the gamma function.

Calculate the Lanczos sum for the approximation of the gamma function.

Create an iterator which evaluates the natural logarithm of 1-exp(-|x|) for each iterated value.

Create an iterator which evaluates the natural logarithm of the beta function.

Inverse incomplete beta function.

Create an iterator which evaluates the natural logarithm of 1+x for each iterated value.

Natural logarithm of the beta function.

Inverse incomplete beta function.

Create an iterator which evaluates Binet's formula for each iterated value.

Gamma function.

Create an iterator which evaluates the binary logarithm for each iterated value.

Create an iterator which evaluates the gamma function for each iterated value.

Compute gamma(x+1) - 1.

Compute the ratio of two gamma functions.

Create an iterator which evaluates the Riemann zeta function for each iterated value.