Indeed <@U0C1JH0RF>. Does kotlin-`log` at least provide `e` as default for the base? Because if so u...

# stdlib

[holgerbrandl]

Indeed @gaetan. Does kotlin-log at least provide e as default for the base? Because if so users could keep using log as natural logarithm. LIke in python https://docs.python.org/2/library/math.html#math.log or R http://astrostatistics.psu.edu/su07/R/html/base/html/Log.html

[gildor]

localhost? 😀

[holgerbrandl]

ups sorry, fixed!

[gaetan]

I think there is a performance point. ln, log10 and log2 implementations directly delegated calls to native implementations which is not the case for log. 99,9% of use should have the best performance.

[gildor]

But what if implementation just check base and use intrinsics for standard bases?

[gaetan]

Could be. After it should be clearly explained. I was porting some code using kotlin.js.Math and didn’t understand at first that kotlin.js.Math.log was replaced by kotlin.math.ln. And again, ln is not the convention on java and javascript.

[elizarov]

This is an interesting idea. However, we are adding math function on the top level, which forces us to consider a different set of tradeoffs.

[elizarov]

In particular, if we were to support one-arg log(x) function for a natural logarithm, then it is highly likely that it is going to conflict with logging functions in many real-life projects.

[elizarov]

A function called log that can only be invoked with two doubles is less prone to this kind of confusion.

[holgerbrandl]

sure, logging how could we miss that. Thanks for pointing that out.

[gaetan]

Ok, then the documentation of log(x,x) should be more explicit, indicating ln, log10,log2.

[elizarov]

Agree