Logarithm functions with different bases

[jrom99]

Hello, I'm trying to use calc to calculate a logarithm in base 2, but I'm having trouble finding a function that accepts a logarithm with a different base (similar to math.log in python). Is such a function available in calc? Where can I import it from? I'm aware that I could use the formula logb(x) = log(x)/log(b), but a general function would be easier.

Thanks in advance!

[lcn2]

Hello, I'm trying to use calc to calculate a logarithm in base 2, but I'm having trouble finding a function that accepts a logarithm with a different base (similar to math.log in python). Is such a function available in calc? Where can I import it from? I'm aware that I could use the formula logb(x) = log(x)/log(b), but a general function would be easier.

Thanks in advance!

We could certainly consider adding both a log base 2 as well a a more general log base n builtin functions for version 2.14.4.

Perhaps by adding a lb() function for log base 2 and some other builtin there the 2nd arg would be a logarithm base.

[jrom99]

In this case, may I suggest using log2 for the log base 2 and logn for the arbitrary base?

[lcn2]

In this case, may I suggest using log2 for the log base 2 and logn for the arbitrary base?

Sure, log2() and logn() are fine choices.

[lcn2]

We have added a priority enhancement issue #87, @jrom99. Feel free to comment on that issue.

[lcn2]

Given the new enhancement issue #87, @jrom99, we will now close this discussion with our thanks. Feel free to comment on that issue if you wish.

[lcn2]

FYI: With commit 1c839df, the log2(x) and logn(x, n) builtin functions have been added, @jrom99

We expect to release calc version 2.15.x with this code in the near future. See issue #87 for details.