E-CodeNumber base converter (2 to 36) — a TI-89 Titanium program
BASE89 is a TI-89 BASIC program for the TI-89 Titanium. Convert a whole number written in any base from 2 to 36 (digits 0-9 then A-Z) to any other base, with its decimal value — exact at any size, because the TI-89 keeps whole numbers exact.
What it asks for and what it shows
It asks for 3 values at its prompts. In the example below it shows DECIMAL, IN BASE 16:, FF, DIGITS.
Example run
One of its oracle test cases: “255 to hex”. The inputs are typed in order, and the results are the values the case expects on the screen.
| Step | Value |
|---|---|
| You enter | |
| Input 1 | 255 |
| Input 2 | 10 |
| Input 3 | 16 |
| The screen shows | |
DECIMAL= | 255 |
| Text | IN BASE 16: |
| Text | FF |
DIGITS= | 2 |
How it's checked
5 test cases, each checked against an independent method. Replayed key by key on a virtual TI-89 Titanium, they make 28 checks.
How E-Code checks every program
Run it or put it on your calculator
- Open the library in the TI-89 Titanium calculator and pick “Number base converter (2 to 36)” (BASE89).
- Put it on your own calculator with a computer and a USB cable, or type it in by hand.