Recent changes to support-requests

#4 Arbitrary base logarithm

(chongo) Landon Curt Noll — Mon, 25 Apr 2016 16:29:32 -0000

Hello,

As you may know, you can calculate the logarithm of x in base y by the following: ln(x)/ln(y).

Currently we have, as you noted, two logarithm functons ln(x [, espilon]) and log(x [, epsilion]). Perhaps addiing 3rd function .. oh say call it logb(x, base [, epsilon]), where the 2nd base argument is required could return ln(x)/ln(base) for you.

I'm not sure what the best name for this buildin function. Alas we cannot use ln() nor log() because today their 2nd argument, if given, is the epsilon error term. So maybe we can use lnb(x,base[,ep]) or maybe logb(x,base[,ep]) or ???

chongo (Landon Curt Noll) /\oo/\

#4 Arbitrary base logarithm

Stanislav — Sun, 24 Apr 2016 18:56:06 -0000

Three words: change-of-base.
Question closed.

Arbitrary base logarithm

Stanislav — Sun, 24 Apr 2016 18:30:11 -0000

Is there a way to calculate arbitrary base logarithm and not just base 10 or e?

C++ wrapping for boost

Jean-Pascal Laedermann — Tue, 02 Jun 2009 09:15:28 -0000

The templatized boost libraries provide computing of special functions (gamma, statistical fi), for any kind of 'real' numbers
A wrapping C++ class around calc would allow to use these function easily.
Has somebody developed something like this ?

Is there a euler constant function?

Winter Knight — Mon, 26 Jan 2009 03:53:42 -0000

Is there a euler constant (e = 2.718...) function? I've found both euler() and freeeuler() builtin functions, but they both seem to be completely unrelated. There is a pi() function that returns the pi constant, it seems unlikely that there would not be a builtin for e.

So is there one? How do I use it?

how to print the result in binary format?

Anonymous — Sun, 26 Oct 2008 16:35:53 -0000

Hi guys, thanks for developing apcalc.
I don't know how to print the result in binary format.

Please help.

thanks!

Steve