Saturday, December 31, 2011


The Picomath project holds some reusable math functions inspired by John D. Cook's Stand-alone code for numerical computing, including:

  • Error function
  • Phi (standard normal CDF)
  • Phi inverse
  • Gamma
  • Log Gamma
  • exp(x) - 1 (for small x)
  • log(n!)

These functions are implemented in an impressive list of languages: Ada, C++, C#, D, Erlang, Go, Haskell, Java, Javascript, Lua, Pascal, Perl, PHP, Python (2.x and 3.x), Ruby, Scheme, and Tcl.

And now Factor!

You can find the code (and a bunch of tests) for this on my Github.

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