Godot: Other bases for logarithm function

[HassanHeydariNasab]

Hello,
Please add base for logarithm function.
Thanks :)

[bojidar-bg]

Just to mention the usual way to do this -- use log(x) / log(base)^wikipedia.

[groud]

For comparison, in math.h from the standard C library, there no log function available with a base parameter. However, log2 and log10 function exists.

[Omicron666]

As bojidar-bg mentioned, changing base of log is a trivial operation, thus imho it should not clutter API up.

I would say, eventually, mimic C library, as indicated by groud.

[HassanHeydariNasab]

@bojidar-bg I'd forgotten that rule! (why? :smile: ) Thanks.
Python has log(x[, base]) and also log2 and log10.

[Omicron666]

In that case, implement them all ^^ https://docs.python.org/3/library/math.html

[hubbyist]

Is there a performance gain in log2 and log10 functions? Maintaning 3 versions of the log(x, base) function with out any significant gain is wrong I think.

[groud]

If they are implemented with base-dependant improvements, such as lookup tables, their implementation could be faster. But well, even if their are implemented, that's not the kind of code that need a lot of maintenance work.

[kubecz3k]

First of all thank you for your report and sorry for the delay.

We released Godot 3.0 in January 2018 after 18 months of work, fixing many old issues either directly, or by obsoleting/replacing the features they were referring to.

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[akien-mga]

Our Bugsquad will review this issue more in-depth in 15 days, and potentially close it if its relevance could not be confirmed.

As there was no update since the previous post, we close this issue.

If it is still relevant in the way it was described and discussed above, please comment to ask for it to be reevaluated. If it is only partly relevant, or if the original issue has changed, it would be better to open a new issue (potentially referring to this one) focused on the current state.