Factorial Packages

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

Create an iterator which computes `gamma(x+1) - 1` for each iterated value.

Compute the binomial coefficient.

Compute the natural logarithm of the binomial coefficient.

Gamma function.

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.

Natural logarithm of the gamma function.

Evaluate a factorial.

Evaluate the double factorial.

Evaluate the natural logarithm of the factorial function.

Compute the falling factorial.

Maximum safe nth factorial when stored in double-precision floating-point format.

Create an iterator which generates a sequence of factorials.