Num module for rationals?

[George Karpenkov]

Hi all,

While (almost) every module in an OCaml standard library has a corresponding Core twin, Num doesn't seem to have one.

Using one from the standard library seems a bit awkward since it uses different conventions for argument order, function names, etc...

Is it the case that

• There is a core module for rationals and I haven't noticed it?
• There isn't, and it is not planned since Jane Street does not need rationals support?
• There isn't, but it is planned [eventually]?

George

[Ben Millwood]

Hi George,

Jane Street does have an internal library for handling arbitrary-precision rationals, based on the zarith library. We've not released it before, but I'm not aware of any serious obstacle to doing so, it's just that no-one has done the necessary work.

We'll consider it for inclusion in the next public release, which should be next week (give or take).

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[George Karpenkov]

Cool, thanks, nice to hear!