basic calculator using RPN (reverse Polish notation)
Run with
python3 main.pyThis makes a prompt appear.
Above the prompt are four blank lines. They will show you the four latest stack entries.
If you type in a number or one of the built-in constants (pi, tau, e) and hit Enter, it will be added there.
If you type in a operator, it will execute it using the latest stack entry/entries.
It is also possible to enter multiple things at the same time, separated by spaces.
5 6 7 / * is equivalent to 5 Enter 6 Enter 7 Enter / Enter * Enter
| Operator | Name | Example |
|---|---|---|
+ |
Add | 7 4 + → 11 |
- |
Subtract | 7 4 - → 3 |
/ |
Divide | 7 4 / → 1.75 |
* |
Multiply | 7 4 * → 28 |
** or ^ |
Power | 7 4 ** → 2401 |
mod or % |
Modulo | 7 4 mod → 3 |
log |
Logarithm | 7 4 log → 1.404… |
| Operator | Name | Example |
|---|---|---|
round |
Round (.5 to even) | 7.5 round → 8 |
ceil |
Round up | 7.1 round → 8 |
floor |
Round down | 8.9 round → 8 |
factorial or ! |
Factorial | 8 ! → 40320 |
abs |
Absolute value | -23.8 abs → 23.8 |
exp |
(e x **) |
3 exp → 20.086… |
sqrt |
Square Root (x .5 **) |
16 sqrt → 4 |
ln |
Natural logarithm (x e log) |
16 ln → 2.772… |
and the trigonometric functions cos, sin, tan, acos, asin, atan, all calulated in radians
| Command | Description |
|---|---|
help |
Show simple help menu next to prompt |
exit or Ctrl+D |
End program |
| Ctrl+C | Erase current line |
del |
Delete latest stack entry |
clear |
Delete all stack entries |