Log (10) or ln?

[Pamak2]

I am experiencing unexpected behavior - the native log block calculates the natural logarithm (ln) instead of the base 10 logarithm (log₁₀), which affects my calculations.

Steps to reproduce the error:

1. Create a new project.
2. Add this block.
3. when Screen1.Initialize
   set Label1.Text to log(100)
4. Actual Result: 4.60517 (which is ln(100)).
   Expected result: 2 (since log₁₀(100) = 2).

I don't have any extensions installed
Is this a known bug in recent versions? Could there be any configuration causing this?

[Peter]

Hi, it is always good to search the community before asking any question. Almost all questions have been asked before, like yours.

The 'log' in app inventor is actually ln()

I am making a game that requires showing huge numbers. So instead of 128123000000000000000000000000000000000 it will be shown as 128.123 undecillion. To do that, I need to use a base 10 log function, but the ‘log’ in the app inventor is actually ln(). Is it a bug or is it supposed to be like that, a base-e log instead of a normal base-10 log?

[Kevinkun]

Intresting, in Chinese version, it is translated like this:

[SteveJG]

How to get log10

https://groups.google.com/g/mitappinventortest/c/fN_VSPWhV-4/m/dPmJenJf6CkJ