So far, these are the functions available:

1. Basic arithmetic operations (+, -, *, and /). These operations comply to the BOD-MAS rule
2. Signing and un-signing numbers with the ± button
3. The "C" button can be used to clear the display or the "del" button can be used to delete one digit at a time from right to left
4. The "." for creating decimals

A JAR file is also available for download