Prefix

Prefix is a command line calculatior that can perform calculations on mathematical expressions in prefix (polish) notation.

Example: '+ / * ^ log 2 ^ 2 * 8 pi 3 - 2 3 4 5'

Valid identifiers:

X, Y	Any decimal number or expression
* X Y	X * Y
/ X Y	X / Y
+ X Y	X + Y
- X Y	X - Y
^ X Y	X^Y
log Y X	Logarithm base Y of X
e	The mathmatical constant e
pi	The constant pi
Ans	The answer to the previous expression

Evaluate