is there any tool to convert negative base to int?

[Skaperen]

is there any tool to convert negative base to int?

[bowlofred]

is there any tool to convert negative base to int?

I'm not sure what you're asking. Negative base of an exponential number? Can you give an example?

[Skaperen]

just int, not exponential. also, i want to convert balanced trinary. there was, once, a Soviet computer based on balanced trinary.

[bowlofred]

I have no idea what you're asking. Can you give an example? What is a negative base of an int?

[Gribouillis]

In this Wikipedia page there is a Java function to convert a number to negative base. It should be straightforward to translate the function to Python.

[bowlofred]

You can install and use 'numsys'. For negative radix numbers, you may need to feed it in as a string rather than an int.

>>> n = 12243
>>> int(numsys.rebase(str(n), '-10', 10))
8163

[Skaperen]

In this Wikipedia page there is a Java function to convert a number to negative base. It should be straightforward to translate the function to Python.

or ... use the Python code on that page. since i already understood negative base, i didn't think to check Wikipedia. i am glad you did and found it had code. thanks!

[Gribouillis]

i didn't think to check Wikipedia

Another site to check for generic small tasks like this one is rosettacode.org. They just happen to have a python code for this problem, although their code seems to apply only to small values of the base, and it is mistakenly commented «convert from decimal» while it is actualy «convert from Python integer». The conversion between Python integers and decimals is done by the print() function and the Python parser.