❗Factorials!

by Ricardo Fernández Serrata

Version 1 (April 13, 2021)

Download (5 downloads)

Contains the standard and multi factorial functions with support for Real and/or negative numbers.

Float output doesn't match the Gamma function but it's quite close.

Stirling's Approximation (Constant-Time Factorial for Floats):
sqrt(2*Pi * x) * pow(x / exp(1), x)

Future: Inverse functions of everything here. Also the rising and falling facts.

ℹ en.wikipedia.org/wiki/Factorial

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